CN1936961A - Edge-Shading Guided Grayscale Font Generation Method - Google Patents

Abstract

The invention provides a method, a human-computer interface of computer graphics and a computer readable medium device for generating gray scale images of characters, wherein each character consists of one or more strokes or graphics defined by gray scale edge shadow guide. The method comprises the following steps: displaying a group of sample characters, wherein each character consists of one or more strokes or graphs; each basic stroke or basic graph is defined by using the edge shadow guide as the expression; the strokes or figures of each group or each character are the parameter data defined for the representation by using the edge shadow orientation; each character of the character set is represented by a gray-scale image; the appearance of the gray-scale font of each character needs to be confirmed; if the character appearance is not satisfactory, the method can return to the second step to redefine the basic strokes or the graphics guided by the silhouette, and execute the subsequent steps until the character appearance is satisfactory.

Description

Edge-Shading Guided Grayscale Font Generation Method

technical field

The invention belongs to the technical field of digital representation of written characters or symbols, in particular to a system, method, and computer-readable media device for generating edge-shadow-oriented grayscale fonts.

Background technique

At present, there are many font generation systems for generating Chinese characters on the market. Chinese character fonts are composed of a group of pictographic figures representing Chinese characters. The number of Chinese characters formed is tens of thousands. For example, the common Chinese contains 20,000. above.

Traditional computer technology is used to generate the font of Chinese characters by using the peripheral shape representation method. This technology is described in "Postscript Language Tutorial Cookbook" (Adobe System Inc.) published by Addison-Wesley (1985). This method uses a combination of Some straight line segments and curved line segments forming the shape of the characters are stored to represent the data for generating the glyphs. This technique has some drawbacks; first, since different font shapes must be stored one by one to generate thousands of different character shapes, the memory space requirement is quite large. Secondly, the peripheral data of fonts are stored according to the requirement of high resolution, and only high-resolution fonts can be produced. These data are not suitable for low-resolution fonts.

Another way to generate Chinese character fonts is to use stroke-based font data, where each stroke of a character is defined as the font data that can be used to form each character, and each character is composed of multiple strokes superimposed on each other or cross formation. The stroke-based font data includes key points, width values, feature points, and curve ratio values. The combination of these data is used to define the peripheral shape of each stroke. The construction and display of stroke-based fonts have been described in detail in the US Patent Nos. 5,852,448, 6,151,032 and 6,157,390. Stroke-based font technology is suitable for low memory capacity and occasions where both high and low resolutions are required.

Yet another method for generating Chinese character fonts is to use graphic-based font data, wherein each graphic of the text is defined as the font data that can be used to form each character, and each character is composed of at least one graphic, And each graphic is composed of at least one stroke. The font data of the graphic basis is also represented by key points, width values, feature points, and curve ratio values just like the stroke-based definition. The technology of the graphic-based font has been described in detail in US Patent Nos. 6,501,475 and 6,661,417.

Nowadays, with the progress and development of panel display technology, text can be displayed on mobile phones, palmtop computers and other electronic devices with grayscale images. Previously, only black and white two-level images can be displayed in black(0) 256 to white (255) gray-scale images to display, because the technology of displaying characters with two levels is used in gray-scale screens, the quality of text and images will deteriorate. This phenomenon of poor quality has complex implications The situation of Chinese characters of any shape is particularly obvious, such as the Chinese character 9 shown in Figure 1(D), the grid 12 in it is as shown in Figure 1(E) when it is displayed in grayscale, and this grid 12 contains four Pixels 16a-16d, refer to 16b among them, it includes a partial area A1 occupying the character 9 and an area A2 not occupying the character 9, the gray scale value of 16b is calculated by the following formula with traditional technology:

Gray scale value = (A1×black+A2×white)/(A1+A2) …(1)

In the following narration, equation (1) is called "gray scale value calculation formula", and Fig. 1 (A) shows the character 10 display after using the gray scale value calculation formula calculation, the stroke 20 and stroke 22 of its character 10 Part of the display is shown in Figure 1(B). Figure 1(B) shows four columns of (4×4) pixels in 18a-18d to represent the grayscale values of stroke 20 and stroke 22, such as icons, stroke 20 occupies 50% of the lower half of the pixel row 18a and 50% of the upper half of the pixel row 18b. Similarly, the stroke 22 occupies 50% of the lower half of the pixel row 18c and 50% of the upper half of the pixel row 18d. Accordingly, this The grayscale values of the four columns 18a-18d all have the same grayscale value calculated by the following formula:

Gray scale value = 0.5×black+0.5×white …(2)

The result of the calculation makes the four columns 18a-18d be completely filled with the same gray scale value, so that the block composed of two strokes cannot be distinguished. FIG. 1(C) shows the result of displaying the character 10 in FIG. 1(A) using the traditional technology. It can be seen that the grayscale image that mixes the strokes into one piece really degrades the character display quality seriously.

To sum up, it is a desired demand to develop a system, method and computer-readable medium device that can simultaneously display high-quality gray scale and two-level font technology different from the traditional technology.

Contents of the invention

The object of the present invention is to provide an edge-oriented grayscale font generation method, system, and computer-readable medium device, which can simultaneously display high-quality grayscale and second-level fonts.

The present invention provides a system, method and computer-readable medium device for generating edge shadow-oriented gray-scale font images to obtain high-quality font images on dot matrix screens and gray-scale image screens.

According to a disclosure of the present invention, the present invention provides a method for defining (generating) a set of basic stroke sets for edge-shade-oriented representation, and constructing characters in the character set as edge-shade-oriented font data. This method first extracts each character in the character set. A character contains one or more strokes. Some strokes with similar topological shapes are combined into strokes of different characters, thus forming many character shapes. According to US Patent No. In the descriptions of 5,852,448, 6,151,032 and 6,157,390, a group of strokes with similar topological shapes is represented by the definition of a basic stroke. In other words, all strokes in all text sets are represented by at least one basic stroke, and each basic Strokes are defined by key points, width values, feature points, and curve scale values as described in the aforementioned US patents to generate similarly behaving strokes.

When the font designer defines the basic stroke, he can specify the area code of the edge guide to define the part of the basic stroke that should calculate the grayscale value (that is, when the basic stroke generates a stroke, the part of the stroke covered by the pixels calculated by equation (1). For example, the edge shadow area code may define that the upper half or the lower half of a parallel stroke should calculate the gray scale value, so the defined upper half area (or lower half area) is called an edge shadow area. The font designer chooses an appropriate edge shadow area code and defines it in each basic stroke, so that all similar-shaped strokes generated by the basic stroke will also produce the edge shadow area specified by the definition, and can be used The resulting fringe area appears on the grayscale image. One disclosure of the present invention is that specifying the shading area code in the definition of a basic stroke automatically specifies the shading areas of all corresponding similar strokes. Afterwards, the font designer can observe the effect of all the strokes in the entire generated text set displayed on the grayscale screen. If the effect of the first attempt is not as expected, then the font designer can re-adjust the range of the edge shadow area in the definition of the basic stroke; once the effect is confirmed to be satisfactory, the edge shadow can be directed to the basic stroke of the expression The data stored for group word use.

According to an aspect of the invention the method comprises the use of computer graphics human-machine interface tools and, through appropriate image analysis techniques, guiding in steps the construction of a basic plan for edge-oriented representations. From this point of view, the present invention also provides - a computer graphics man-machine interface tool and - a computer-readable medium device including various disclosures providing various instructions to implement the method.

According to another aspect of the present invention, the present invention provides a method for presenting characters represented by an edge shadow guide. Each character is composed of one or more strokes, and each stroke is composed of key points, width values, feature points, curve ratios, and an edge shadow area code as described above. For each stroke that forms characters, this method is to determine the outer figure shape and coordinate position of the stroke according to the key point, width value, feature point, and curve ratio value, and an edge shadow area code specified in the stroke definition is used to Determine the area occupied by each pixel projected by the side shadow area of the stroke, and the size of the area determines the grayscale value of the pixel. Finally, this method presents the pixel value on each screen according to these determined grayscale values.

The present invention also provides an anti-alienation method for slowing down the alienation phenomenon of jagged images. The anti-alienation method involves analyzing the topological structure of the image around each pixel, and selecting a predefined weighted value according to the analyzed topological structure. The matrix calculates the action of pixel smoothing to produce the best anti-alienation effect, and these pre-selected weight matrixes are the rule basis for calculating pixel smoothing to obtain anti-alienation pixel values.

Description of drawings

In order to further illustrate the specific technical content of the present invention, below in conjunction with embodiment and accompanying drawing detailed description as follows, wherein:

1(A)-(E) illustrate the difficulties encountered in displaying gray-scale image fonts by using traditional two-level (black and white) dot matrix images.

Figure 2 shows a block diagram of a system or graphical human-machine interface tool for implementing the method of the present invention.

3(A)-(C) show an example of using key points, width value feature points, etc. to define basic strokes and their edge shadow codes disclosed by the present invention.

FIG. 4 is a flow chart of a method for defining an edge-guided representation of a grayscale image font disclosed in the present invention.

FIG. 5 is a flow chart of a method for displaying gray scale image fonts by displaying an edge shadow guide disclosed in the present invention.

6(A)-(D) show an anti-alienation method for reducing the grayscale image fonts formed by jagged edges disclosed by the present invention.

Detailed ways

best practice

Figure 2 shows a typical computing environment for implementing the method of the present invention, wherein there is a general-purpose digital computer 26 including a display 27 and a printer 28 for implementing various methods of the present invention. The display device 28, the printing device 28, and other output devices (such as a screen display and a printer, etc.) can develop images, print out, and output the fonts produced by the method of the present invention. Other types of computing systems known in the art, such as network or mainframe systems, may also be used to implement the methods of the present invention.

The invention described below is used to define or generate the strokes contained in the characters, and can also be understood as defining or generating the graphics contained in the characters. As described in the background of the invention, a graph is a unit that constitutes a character, and this unit consists of one or more Composition of strokes. In the present invention, no matter it is based on strokes or graphics, both are defined by key points, width values, feature points, and curve ratio values, and use these defined basic strokes or basic graphics to determine font data and generate Therefore, if there is no concern of confusion, the "stroke" mentioned hereafter covers both strokes and graphics.

Fig. 3 (A) shows-basic stroke 30, and it is made up of key point (K1 and K2), width value (W1), characteristic point (f1, f2, f3, and f4), and curve scale value (not shown ) as defined in U.S. Patent Nos. 5,852,448, 6,151,032, and 6,157,390, one of the characteristics of Chinese characters is that many characters can share many gestures, in other words, similar strokes can be used in many characters, such as shown in Figure 3 (A) The horizontal stroke 30 shown can be used in many characters and also can be used repeatedly in the same character, such as the strokes 20 and 22 in the character 10 in Fig. 1(A). And as described in the above-mentioned patent, a group of similar stroke groups can be represented by basic strokes, and each basic stroke is firstly defined by key points and width values.

The key points (K1 and K2) are usually selected as the tangent intersection points on the line or bend or bend of the basic stroke, and the shape of the basic stroke can be changed by moving the key point to produce a variety of strokes similar to it , the width value (W1) is usually selected as the distance between two points in the basic stroke, so that changing the width value can also produce a variety of similar strokes with different thicknesses. Each basic stroke has some equations to represent how to determine the feature points from the key points and width values, such as Figure 3(A), the equations for determining the feature points (f1, f2, f3, and f4) are:

f1=K1+W1/2

f2=K1-W1/2

f3=K2+W1/2

f4=K2-W1/2 ------(3)

Therefore, the feature point is determined by pre-defining its spatial relationship with the key point and the width value. As shown in the figure, the feature point is selected at the position where the tangent or curvature direction is transformed on the outer shape of the basic stroke. Moreover, each basic stroke also has some predefined curve ratio values, which are pre-built numerical groups according to the resolution level, and are used to generate the curve shape between two adjacent feature points at different resolutions. The construction of the tree-structured curve scale values is as described in the aforementioned patent.

Each basic stroke is confirmed by a specified number of strokes. Each defined basic stroke can be defined by moving the key point and changing the width value to define those similar stroke groups corresponding to it. Once the key point is moved and the width value is changed. , calculate the new feature point position with those pre-stored equations, and calculate the new curve shape between two adjacent new feature points in each level of different resolutions through the pre-stored tree structure curve ratio value. This process of generating similar strokes has been described in detail in the aforementioned patent case.

As mentioned above in the background of the invention, when the above-mentioned strokes are defined to be displayed on a two-level dot matrix image frame and used to be displayed on a grayscale image frame, the quality will deteriorate. Therefore, according to the present invention It is disclosed that each basic stroke (and thus similar strokes generated by the basic stroke) is also added with a specified edge shadow area code to define the way to generate grayscale edge shadow areas within the stroke.

Fig. 3 (B) shows to designate the edge shadow area code " 10 " and " 01 " in two strokes 34 and 36 respectively, an edge shadow area code is used for defining the grayscale edge shadow area in each stroke, when this When the area is projected onto the grayscale image screen, the grayscale value of the grid pixel will be determined according to the grid area it falls in the stroke. For example, the stroke 34 designation-edge shadow area code "10" indicates its upper half, and 34a is the dot (K1, f1, f3, f2) surround the edge shadow area, and calculate the pixel value of the grid where it is located based on its specified grayscale value. In other words, the edge shadow area is also a partial stroke area surrounded by key points, width values, feature points, and curve ratio values. In addition, 34b belonging to the lower half is not an edge shadow area, and is adjusted to a black point ( will not cause its pixel grid to become gray value). Stroke 36 is assigned a side-shading area code "01", which means in this example that its upper half 36a is not a side-shading area and is adjusted to black dots, while the lower half 36b is composed of point groups (k, k2, f4, For the edge shadow area surrounded by f2), when it is displayed, it is necessary to calculate the gray scale value of the pixel grid on it. For those skilled in the art, the above-mentioned edge shadow area code is just one example. In fact, the edge shadow area code has various definition methods according to the basic stroke shape and its requirements on font generation. For the current description only, the specified edge area code on each stroke means that some blocks inside the stroke need to calculate the gray value of the pixels falling on it, the edge area code of each stroke It is stored in the identity code (the number of strokes or the number of strokes) of the stroke.

FIG. 3(C) shows two strokes 20 and 22 in the character 10 of FIG. 1(A), and they each have a side shadow area code "10". As shown in FIG. 3(B), there are four pixel columns 18a-18d located thereon when the image is displayed. Since the shadow area code "10" of each stroke will become a grayscale value when developing, these two strokes will be displayed as shown in the mark 39, and they are visually separated by two strokes. This result is produced because the image in the lower half of the non-edge shadow area adopts the specified grayscale value, for example, specifying its gray scale value to be white, so, using the strokes represented by the guideline of the properly defined edge shadow area to combine the text, it is It can display smooth gray-scale image fonts. For example, the aliasing phenomenon of the two strokes 20 and 22 of the character 10 shown in FIG. .

Fig. 4 is a flow chart of defining a group of basic strokes with edge-shading-guided performance, and these defined basic strokes are used to define the grayscale image font of the text. As shown in block 40, the font designer displays a set of glyphs (displayed at various dot matrix sizes) for reference in defining edge shadow guides. Basically, a font designer is a graphic designer whose The task is to create a font database for commercial use. Each character in the character set is composed of one or more strokes, and all the strokes that make up the characters can be divided into groups, each group contains a group of similar strokes, and each group of similar strokes can be represented by a basic stroke For the generation of topological shapes, the basic stroke is a program for generating strokes defined by parameters using key points, width values, feature points, and curve ratio values.

As shown in block 42, the font designer defines each basic stroke as an edge-shading-oriented representation. The font designer visually confirms the best definition of the specified side shadow area in each basic stroke, such as observing the situation between a stroke and another adjacent or adjacent stroke to specify the side shadow area to avoid them in low resolution There will be an overlapping phenomenon, and then assign the border area code to the basic stroke, and the designated border area code in the definition of the basic stroke will appear in each similar stroke corresponding to the basic stroke when forming characters.

As shown in block 44, the font designer displays all the characters represented by the edge shadow guide, and the stroke of each character is determined by its edge shadow area code to display the grayscale image; in other words, only the edge shadow area The gray value of these pixels will be calculated only for the pixel grid that is located.

As shown in block 46, the font designer uses his vision to observe all the displayed characters in grayscale. If these characters have been properly subtracted into grayscale fonts, there is no phenomenon that the strokes are overlapped. , the construction of the gray-scale font in this method is completed, otherwise go back to block 42 to redefine some basic strokes as a new edge shadow area-oriented performance, and then as shown in block 44, these redefine the edge shadows Those gray-scale image characters generated by the basic strokes of the area; as shown in block 46, the font designer checks whether the quality of these gray-scale image characters is satisfactory, and repeats such actions until satisfied.

According to another aspect of the present invention, the present invention provides a method for displaying gray-scale image characters represented by edge-shading guides. FIG. 5 shows a flow chart of this method. For example, the method shown in FIG. 5 can be used for Block 4 of FIG. 4, the steps shown in FIG. 5 are executed by an image display program or engine stored in the computer to display grayscale image text on the display of the grayscale screen.

As shown in block 52, this method is to construct a scanned image of a character according to the size of the dot matrix, such as a 6×6 dot matrix 60 shown in FIG. Line, in the example description, a character image 64 will be displayed on the dot matrix 60 .

As shown in block 54 of FIG. 5 , for each pixel in the dot matrix 60 , there will be an appropriate algorithm to plan the gray value of the pixel for the edge-shading-oriented representation. For example, equation (1) is used to calculate the gray value of each pixel, as shown in block 59 , and these calculated gray values constitute the grayscale image of the text. However, directly using the grayscale image of the displayed text based on the gray value calculated above will produce jagged or dissimilated image fonts. Therefore, anti-alienation methods can also be used to reduce the jagged highlights, such as the box in Figure 5 56 and the anti-alienation method shown in box 58. Many anti-alienation methods have been proposed in the processing of image graphics. The present invention provides an anti-alienation method as shown in FIG. The calculated gray value of the square 54, and the P5 located in the center of the pixel area 70 is the pixel to be recalculated to its new gray value, and the calculation of the new gray value of P5 is based on the surrounding eight pixels The uniform mixture result formed by the gray value according to its weighting, its calculation formula is as follows:

New pixel value of P5 =

Where Wi is the weighted value of pixel I, and those familiar with the art know that the weighted value of matrix w is usually Gaussian distribution, that is, if the weighted value of the center point is the largest, then the weighted values of other points away from the center are according to Gaussian distribution decrease.

The traditional anti-alienation method is to take a weighted value matrix of fixed Gaussian distribution, while the anti-alienated method of the present invention is to take different weighted value matrices according to the writing direction of the stroke to calculate P5 respectively. For example, the anti-alienation calculation method for the considered pixel 66 and pixel 68 located in the text image 64 (FIG. 6(A)) is shown in FIG. 6(C) and FIG. 6(D).

Figure 6(C) considers the 3×3 pixel area of the text image surrounding pixel 66, from the calculation of the difference between the leftmost and rightmost pixels 76 and 78, three categories as shown at 80 will be obtained: zero, positive value, or negative The writing value of the value, such as the writing value shown in Figure 6 (C) <0, +, +>, according to the writing value, one of the matrix of several pre-duplicated weighted value matrices can be selected, for example, the weighted value matrix is selected W, (82), which is a prefabricated weighted value matrix used to calculate written values <0, +, +> to produce the best anti-alienation effect. Therefore, the pixel 66 at the central position uses the selected weight value matrix w1 (82) to substitute into equation (4) to calculate the de-alienated gray value of P5 (pixel 66).

Similarly, Fig. 6(D) considers the 3×3 pixel area surrounding the pixel 68, and after calculating the pixel columns 83a, 83b, and 83c, the written value 84 of Fig. 6(D) is obtained as <one, one, one> according to The written value 84 then selects the duplicated weighting matrix w2 (86), and uses the de-alienated gray value of p5 (pixel 68) calculated by substituting it into the equation (4) to achieve the best de-alienated effect. Those skilled in the art can also understand that the elements of the weighting value matrix can also adopt other values different from those disclosed in the present invention, which can also produce the same anti-alienation effect when used in different situations of writing values.

The various methods of the present invention can be implemented by a tool of a graphical human-machine interface (GUI), such as a GUI tool of a window-based operating system, and one or more steps in some methods can also be implemented through a video Analysis techniques are automatically completed.

Once the preferred embodiment of the present invention has been disclosed and described in detail above, other similar or equivalent modifications of ideas and practices can be easily understood by those with a little skill in the industry. The claims of the present invention include this embodiment and other modifications. Similar examples.

Claims (19)

1, a kind of method of building grey-tone image display text font, wherein each literal is made up of at least one stroke or figure, and each stroke or figure be the performance that is defined by edge-shadow-guide, it is characterized in that this method comprises:

(1) literal with character set is shown as grey-tone image, and wherein each literal is made up of one or more strokes or figure, and its all strokes or figure are to be stroke or the figure of representing the similar topology of a group by basic strokes collection or fundamental figure;

(2) each basic strokes of definition basic strokes collection or fundamental figure collection or figure form the performance of edge-shadow-guide;

(3) form the performance of edge-shadow-guide by stroke in each literal of parameter-definition of basic strokes collection or fundamental figure collection or figure;

(4) grey-tone image of all literal in display text and the collection;

(5) check the appearance of the grey-tone image of all literal;

(6) if having unsatisfied appearance, then resumes step (2); And

(7) step (1) just stops after the appearance of all literal is identified and accepts to the action of step (6) repeatedly.

2, the method for construction grey-tone image display text font as claimed in claim 1, it is characterized in that, each stroke or the figure that wherein constitute the font data of character set are defined by key point, width value, unique point and curve ratio, and unique point is to determine its position by the prefabricated equation that prestores of substitution, and equational parameter is key point position and width value; The prefabricated curve ratio value that prestores determines the curve shape between adjacent two unique points.

3, the method for construction grey-tone image display text font as claimed in claim 1 is characterized in that, wherein step (2) comprises definition territory, shadow zone, limit in the definition of each basic strokes or figure.

4, the method for construction grey-tone image display text font as claimed in claim 1 is characterized in that, wherein step (2) also comprises the appointed area sign indicating number further to each territory, shadow zone, limit that is defined, to constitute the limit shadow sign indicating number of each basic strokes of definition or figure.

5, the method for construction grey-tone image display text font as claimed in claim 4, it is characterized in that, wherein step (3) comprises each stroke or the figure of specifying identical limit shadow sign indicating number to give basic strokes or fundamental figure, in order to produce the limit shadow performance of similar stroke or figure.

6, the method of construction grey-tone image display text font as claimed in claim 3, it is characterized in that, each stroke or the figure that wherein constitute literal font collection are with key point, width value, unique point and curve ratio value are defined, and similar stroke or figure group are by equally with key point, width value, unique point and curve ratio value add basic strokes giving definition or fundamental figure performance they, and step (2) comprises territory, shadow zone, limit is defined in the definition of basic strokes or fundamental figure, and wherein territory, shadow zone, limit also is to use key point, width value, unique point and curve ratio value add and give definition.

7, the method for construction grey-tone image display text font as claimed in claim 3 is characterized in that, wherein step (4) is a grey-tone image in each literal of display text collection, comprises:

(1) each pixel of occupying territory, shadow zone, limit is calculated its GTG value;

(2) to each pixel, analyze the distribution of writing of the literal image in the window arround it, select a prefabricated weight matrix that prestores to calculate the anteiso-ashing rank value of this pixel according to writing to distribute again; And

(3) show each pixel according to anteiso-ashing rank value.

8, a kind of man-machine interface instrument of computer graphical, the GTG font that is used to build character set, wherein each literal is made up of one or more strokes or figure, and each stroke or figure be the performance that is defined by edge-shadow-guide, it is characterized in that, comprises:

(1) means of the grey-tone image literal of display text collection, each word of character set is made up of one or more strokes or figure, all by one group of basic stroke or fundamental figure performance, each basic stroke or fundamental figure are represented the stroke or the figure of the similar topology of a group for all strokes or figure;

(2) expression means of each basic stroke or parent map formation edge-shadow-guide in definition basic strokes collection or the fundamental figure;

(3) each stroke or figure form the means of the performance of edge-shadow-guide in the definition literal.

9, the man-machine interface instrument of computer graphical as claimed in claim 8, it is characterized in that the means that wherein define each stroke or figure are to go to define automatically the performance that this similar stroke or similar fitgures become edge-shadow-guide according to the performance that each basic stroke or fundamental figure in basic stroke collection or the fundamental figure collection become edge-shadow-guide.

10, the man-machine interface instrument of computer graphical as claimed in claim 8, it is characterized in that, each stroke or the figure that wherein constitute literal font collection are with key point, width value, unique point and curve ratio value are defined, and similar stroke or figure group are by equally with key point, width value, unique point and curve ratio value add basic strokes giving definition or fundamental figure performance they, and step (2) comprises territory, shadow zone, limit is defined in the definition of basic strokes or fundamental figure, and wherein territory, shadow zone, limit also is to use key point, width value, unique point and curve ratio value add and give definition.

11, the man-machine interface instrument of computer graphical as claimed in claim 8, it is characterized in that, wherein define the means of the performance that each basic stroke in basic strokes collection or the fundamental figure collection or fundamental figure become edge-shadow-guide, be included in each basic stroke or the fundamental figure regularly territory, shadow zone, limit.

12, the man-machine interface instrument of computer graphical as claimed in claim 8 is characterized in that, shows that wherein the means of the grey-tone image of GTG character set also comprise further:

(1) each pixel of occupying territory, shadow zone, limit is calculated the means of its GTG value;

(2) to each pixel, analyze the distribution of writing of the literal image in the window arround it, select a prefabricated weight matrix that prestores to calculate the means of the anteiso-ashing rank value of this pixel according to writing to distribute again; And

(3) be worth the means that show each pixel according to anteiso-ashing rank.

13, a kind of computer readable medium device with computer executable instructions, it is characterized in that, in order to build the character set that can show grey-tone image, wherein each literal is made up of at least one stroke or figure, and each stroke or figure are the performances that is defined as edge-shadow-guide, can make computing machine go to carry out following steps in these instruction load computing machines:

(1) literal with character set is shown as grey-tone image, and wherein each literal is made up of one or more strokes or figure, and its all strokes or figure are to be stroke or the figure of representing the similar topology of a group by basic strokes collection or fundamental figure;

(2) allow the end user to go to define each basic strokes of basic strokes collection or fundamental figure collection or the performance that figure forms edge-shadow-guide;

(3) form the performance of edge-shadow-guide by stroke in each literal of parameter-definition of basic strokes collection or fundamental figure collection or figure;

(4) grey-tone image of all literal in display text and the collection.

14, the computer readable medium device with computer executable instructions as claimed in claim 13, it is characterized in that, each stroke or the figure that wherein constitute the font data of character set are defined by key point, width value, unique point and curve ratio, and unique point is to determine its position by the prefabricated equation that prestores of substitution, and equational parameter is key point position and width value; The prefabricated curve ratio value that prestores determines the curve shape between adjacent two unique points.

15, the computer readable medium device with computer executable instructions as claimed in claim 13 is characterized in that, wherein step (2) comprises definition territory, shadow zone, limit in the definition of each basic strokes or figure.

16, the computer readable medium device with computer executable instructions as claimed in claim 15, it is characterized in that, wherein step (2) also comprises the appointed area sign indicating number further to each territory, shadow zone, limit that is defined, to constitute the limit shadow sign indicating number of each basic strokes of definition or figure.

17, the computer readable medium device with computer executable instructions as claimed in claim 16, it is characterized in that, wherein step (3) comprises each stroke or the figure of specifying identical limit shadow sign indicating number to give basic strokes or fundamental figure, in order to produce the limit shadow performance of similar stroke or figure.

18, computer readable medium device with computer executable instructions as claimed in claim 15, it is characterized in that, each stroke or the figure that wherein constitute literal font collection are with key point, width value, unique point and curve ratio value are defined, and similar stroke or figure group are by equally with key point, width value, unique point and curve ratio value add basic strokes giving definition or fundamental figure performance they, and step (2) comprises territory, shadow zone, limit is defined in the definition of basic strokes or fundamental figure, and wherein territory, shadow zone, limit also is to use key point, width value, unique point and curve ratio value add and give definition.

19, the computer readable medium device with computer executable instructions as claimed in claim 13 is characterized in that, wherein step (4) is a grey-tone image in each literal of display text collection, comprises:

(1) each pixel of occupying territory, shadow zone, limit is calculated its GTG value;

(2) to each pixel, analyze the distribution of writing of the literal image in the window arround it, select a prefabricated weight matrix that prestores to calculate the anteiso-ashing rank value of this pixel according to writing to distribute again; And

(3) show each pixel according to anteiso-ashing rank value.

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