JP7418699B2 - Recording control device and recording control method - Google Patents

Description

The present invention relates to a recording control device mounted on a vehicle and a recording control method.

A recording control device mounted on a vehicle continuously photographs the surroundings of the vehicle, such as the front and rear of the vehicle, and records images. The recording control device stores the captured video on a storage medium, but since the storage medium has a limited capacity, after storing multiple video data for a certain period of time, it sequentially overwrites the oldest video data. Save new footage.

Patent Document 1 discloses an in-vehicle equipment control device including a biological information acquisition unit, an emotion estimation unit, and an in-vehicle equipment control unit. The biological information acquisition unit acquires biological information from a biological sensor that measures biological information of a driver or a passenger of the vehicle. The emotion estimator uses biometric information to determine the magnitude of change in a value indicating the level of emotion of the driver or passenger. The in-vehicle device control section controls the operation of the in-vehicle device included in the vehicle when the magnitude of change in the value determined by the emotion estimation section exceeds a predetermined threshold. The in-vehicle device is an imaging device provided inside and outside the vehicle, and the in-vehicle device control section functions to leave video data including the timing at which the emotion suddenly changes.

JP 2017-136922 Publication

By the way, if the driver is smiling, it is considered that there is no danger around the vehicle, and there is little need to leave video data. On the other hand, if the driver's expression is stern, it is assumed that the danger around the vehicle is increasing or that an unpleasant situation is occurring, and it is necessary to preserve the video data in an appropriate format. It gets expensive. The in-vehicle equipment control device described in Patent Document 1 saves video data including the timing at which the emotions of the driver or passenger of the vehicle suddenly changed, but the division positions of the video data to be saved are determined based on the emotional level of the vehicle occupant. I couldn't decide.

The present invention has been made in view of the above circumstances, and its purpose is to provide a recording control device and a recording control method that can determine the delimiting position of video data to be saved according to the emotional level of the passenger. It is about providing.

A recording control device according to an aspect of the present invention includes a video data acquisition unit that acquires video data obtained by capturing images of the surroundings of a vehicle, and a video data acquisition unit that acquires video data obtained by capturing images of the surroundings of a vehicle. The present invention includes an occupant emotion determining section that estimates the occupant's emotional level and determines the occupant's emotional level, and a recording processing section that determines the dividing position of the video data based on the occupant's emotional level and causes the recording section to record the video data.

Another aspect of the present invention is a recording control method. This recording control method involves a step in which a computer acquires video data of images around the vehicle, and estimates the occupant's emotions based on information from a biosensor that detects the biometric information of the occupant inside the vehicle. A step of determining an emotional level, and a step of determining a dividing position of video data based on the passenger emotional level and recording the video data in a recording section are executed.

According to the present invention, it is possible to determine the division position of video data to be saved according to the passenger emotional level.

1 is a block diagram showing the configuration of a drive recorder including a recording control device according to a first embodiment. FIG. FIG. 3 is a schematic diagram for explaining a recording method based on the occupant emotional level. It is a chart showing an example of a retention period according to an occupant emotional level. 5 is a flowchart showing the procedure of recording processing of video data in the recording control device. FIG. 3 is a schematic diagram for explaining information regarding recorded video data. 7 is a flowchart illustrating the procedure of a retention period determination process of the recording control device according to the second embodiment.

Hereinafter, the present invention will be explained based on a preferred embodiment with reference to FIGS. 1 to 6. Identical or equivalent components and members shown in each drawing are designated by the same reference numerals, and redundant explanations will be omitted as appropriate. Further, the dimensions of members in each drawing are shown enlarged or reduced as appropriate to facilitate understanding. Further, in each drawing, some members that are not important for explaining the embodiments are omitted.

(Embodiment 1)
FIG. 1 is a block diagram showing the configuration of a drive recorder 100 including a recording control device 50 according to the first embodiment. The drive recorder 100 is mounted on a vehicle, and records image data by continuously photographing the surroundings of the vehicle, such as the front, sides, and rear of the vehicle. The drive recorder 100 records the captured video in the recording unit, but since the capacity of the recording unit is limited, new video data is created by sequentially deleting the video data based on the retention period described later. Record. The recording control device 50 of the drive recorder 100 estimates the emotion of the occupant riding in the vehicle, determines the occupant's emotional level, and determines the retention period of video data.

The drive recorder 100 includes an imaging section 10, a recording section 20, a biological sensor 30, an input/output interface 40, a clock section 41, a recording control device 50, and the like. The imaging unit 10 is, for example, a camera having a detector such as a CCD, and photographs the surroundings of the vehicle, such as the front of the vehicle. The imaging unit 10 acquires video continuously over time and sends the acquired video data to a video data acquisition unit 51 of a recording control device 50, which will be described later.

The recording unit 20 is, for example, a removable medium such as an SD card or a USB memory, or a hard disk, and is capable of recording and deleting the video data acquired by the video data acquisition unit 51. By making the recording unit 20 detachable from the drive recorder 100, it can be removed from the drive recorder 100 and the video can be played back on another PC or the like.

The biosensor 30 is, for example, a camera that captures an image of the body, such as the face, of an occupant inside the vehicle, and detects biometric information of the occupant. The biological information detected by the biological sensor 30 is output to the recording control device 50. An occupant emotion determination unit 52 of the recording control device 50, which will be described later, estimates the emotion of the occupant based on biological information acquired from the biosensor 30, and determines the occupant's emotional level.

When the biosensor 30 is a camera that captures an image of the occupant's face, the occupant emotion determination unit 52 determines whether the occupant has a smiling expression, a grim expression, or an angry expression based on the movements of the occupant's mouth, eyes, etc. It uses image recognition to estimate the emotions of the occupants. The biosensor 30 may be a microphone that captures the occupant's voice, a sensor that measures the occupant's heart rate, breathing rate, body temperature, etc., and keyword detection through voice recognition, voice intonation, and the occupant's heart rate and breathing rate. Various sensors can be used that can estimate the emotion of the occupant based on body temperature, etc. Further, as a method for estimating the emotion of the occupant based on the biological information acquired by the biological sensor 30, known techniques including the above-mentioned image recognition method can be used.

The input/output interface 40 acquires vehicle speed information, position information, etc. from an external device. The clock section 41 measures date and time. The drive recorder 100 may record speed information, position information, etc. acquired by the input/output interface 40, and date and time information acquired by the clock section 41, in addition to the video data. Further, the timer section 41 is used for time measurement in the recording control device 50 as appropriate.

The recording control device 50 includes a video data acquisition section 51, an occupant emotion determination section 52, and a recording processing section 53. The recording control device 50 is constituted by, for example, a CPU, and executes the processing by the above-mentioned units by operating according to a computer program. The storage unit 50a is constituted by a data storage device such as a RAM (Random Access Memory), a flash memory, or a hard disk storage device, and stores computer programs and the like executed by the recording control device 50.

The video data acquisition unit 51 acquires video data captured by the imaging unit 10, performs processing such as data compression, and outputs the data to the recording processing unit 53. The video data acquisition section 51 may be configured to include the imaging section 10.

The occupant emotion determination unit 52 estimates the occupant's emotion based on biological information from the biosensor 30, and determines the occupant's emotional level. The biosensor 30 is, for example, a vehicle-mounted camera, and the occupant emotion determination unit 52 determines the occupant's emotional level based on the photographed facial expressions of the occupant and the degree of opening of the eyes and mouth. The biosensor 30 may be a thermo camera or a sensor for measuring pulse and heart rate. The occupant emotion determining unit 52 determines the occupant's emotional level based on the occupant's body temperature, pulse, heartbeat, and other conditions. The occupant emotion level has multiple levels, and the occupant emotion determining unit 52 determines the occupant's emotion from moment to moment into the occupant emotion level from 1 to 5, for example. The occupant emotion determination unit 52 sets the occupant emotion level to 1 when the occupant is in an emotional state such as discomfort or anger, and sets the occupant emotion level to 5 when the occupant is in a comfortable condition or an emotional state such as joy. judge. The passenger emotion level 3 is, for example, a calm state, the passenger emotion level 2 is between the passenger emotion levels 1 and 3, and the passenger emotion level 4 is between the passenger emotion levels 5 and 3.

The recording processing unit 53 generates a delimiter signal for dividing the video data based on the passenger emotion level determined by the passenger emotion determination unit 52, and controls recording of the video data acquired from the video data acquisition unit 51 into the recording unit 20. do. The delimiter signal is used to delimit the video data acquired when the passenger emotional level changes, and includes the passenger emotional level and the retention period of the video data determined based on the passenger emotional level. For example, if the occupant is in an emotional state such as discomfort or anger and the occupant emotion level is 1, the retention period is lengthened, and if the occupant is in a comfortable or happy emotional state and the occupant emotion level is 5, the retention period is Shorten retention period.

Further, the recording processing unit 53 stores a retention period in the storage unit 50a in association with identification information (for example, a serial number or a file name) of the video data recorded in the recording unit 20, and when the retention period has passed, A process of deleting the corresponding video data from the recording unit 20 is performed.

FIG. 2 is a schematic diagram for explaining a recording method based on the occupant emotional level. In the example shown in FIG. 2, the occupant emotion determination unit 52 determines the occupant emotion level in five levels. The occupant emotion determination unit 52 determines the occupant emotion level to be 3, 2, 4, 5, . . . as shown in FIG. The video data acquisition unit 51 sequentially generates video data with a time length ΔT as one video file, and video data #1, #2, #3, etc. are recorded in the recording unit 20. . The time length of video data #1 to #5 is assumed to be ΔT. When the occupant emotion level changes from 3 to 2, the recording processing unit 53 divides the video data based on the delimiter signal, generates video data #6 whose time length is shorter than ΔT, and causes the recording unit 20 to record it. A passenger emotion level 3 and a retention period corresponding to the passenger emotion level are added to video data #1 to #6.

FIG. 3 is a chart showing an example of a retention period depending on the passenger emotional level. For example, when the occupant is in an emotional state such as discomfort or anger and the occupant's emotional level is 1, the retention period of the video data is set to 48 hours. As the occupant emotion level increases from 1, the holding period is gradually shortened, and when the occupant is in a comfortable state or an emotional state such as joy and the occupant emotion level is 5, the holding period is set to 30 minutes, for example. Furthermore, when the passenger emotion level is 1, the retention period of the video data may be undefined, and the video data may be deleted only when it becomes necessary to overwrite it.

Next, the operation of the recording control device 50 will be explained based on recording processing of video data. FIG. 4 is a flowchart showing the procedure of video data recording processing in the recording control device 50. In the drive recorder 100, the video data captured by the imaging unit 10 is acquired by the video data acquisition unit 51 of the recording control device 50, and after recording one video data in the recording unit 20, the next video data is recorded in the recording unit. The process of recording in 20 will be explained. It is assumed that the video data is recorded in the recording unit 20 as data separated by a time length ΔT if there is no change in the passenger emotional level.

The recording processing unit 53 starts a timer (S1), and determines whether or not there has been a change in the occupant emotion level determined by the occupant emotion determination unit 52 (S2). If there is a change in the passenger emotional level (S2: YES), the recording processing unit 53 separates the video data using a delimiter signal, records the video data in the recording unit 20 before ΔT elapses (S3), and ends the process. .

If there is no change in the passenger emotion level determined by the passenger emotion determination unit 52 (S2: NO), the recording processing unit 53 determines whether ΔT has elapsed (S4). When the recording processing unit 53 determines that ΔT has not elapsed (S4: NO), the process returns to step S2 and repeats the process. When the recording processing unit 53 determines that ΔT has elapsed (S4: YES), the recording processing unit 53 records the video data to the recording unit 20 (S3), and ends the process.

By repeating the process shown in FIG. 4, video data is sequentially recorded in the recording unit 20. FIG. 5 is a schematic diagram for explaining information regarding recorded video data. Video data #1 to #6 have an occupant emotion level of 3 and a retention period of 12 hours. Thereafter, the occupant emotion level of video data #7 to #9 is 2, and the retention period is 24 hours. Furthermore, the occupant emotion level of video data #10 is 4, and the retention period is 4 hours.

As described above, the recording processing unit 53 stores the retention period in the storage unit 50a in association with the identification information of the video data, and deletes the corresponding video data from the recording unit 20 when the retention period has passed. Perform processing. For example, if each video data recorded as shown in FIG. 5 has a time length ΔT of about 1 minute, the time for recording video data #1 to #10 is about 10 minutes. Among video data #1 to #10, video data #10 is deleted earliest after the retention period has elapsed, then video data #1 to #6 are deleted in order, and video data #7 to #10 are deleted in order. will be deleted.

The recording control device 50 quickly deletes video data recorded when the vehicle occupant, for example, the driver, was in a comfortable state or in an emotional state such as joy, and deletes video data recorded when the driver is in an uncomfortable state or in an emotional state such as anger. The video data recorded during the period is processed to be stored for a long time. The recording control device 50 records information indicating that when the occupants of the vehicle are in an emotional state such as discomfort or anger, there is an abnormal situation such as a near miss in the vicinity of the vehicle, or an unusual situation such as an accident is likely to occur in the vicinity of the vehicle. It is possible to leave the video data in the recording unit 20 for a long time by determining that the situation is right. Further, the occupant of the vehicle is not limited to the driver, and the occupant emotional level may also be determined for a fellow passenger. Alternatively, the passenger emotional level for the driver and the passenger emotional level for the fellow passenger may be determined in advance, and the passenger emotional level may be calculated by comprehensively determining these. At this time, the occupant emotional level of the fellow passenger may be weighted by detecting from the biometric information of the fellow passenger whether he or she is sleeping or not looking at the outside of the vehicle. More specifically, if it is thought that the passenger is not looking at the outside of the vehicle and is not aware of the vehicle's driving situation, the passenger's emotional level regarding the driver is given more weight than the passenger's emotional level regarding the passenger. It is also possible to determine the overall emotional level of the occupant.

The occupant emotion determination unit 52 of the recording control device 50 keeps a history of the occupant emotion level, evaluates whether the occupant emotion level can be appropriately determined in a set multi-step manner, and determines if the determination result is biased depending on the occupant. The criteria for determination may be changed. For example, when the passenger emotional level is evaluated on a five-level scale, if the passenger emotional level of a certain passenger changes from 1 to 3 for a certain period of time (for example, one month), the passenger's emotional level is It is determined that the central value of the level is low, and the central value and range of the determination level are changed so that the passenger emotion level is determined to be 1 to 5. Further, standards may be set for each of a plurality of occupants boarding the vehicle.

The occupant emotion determining unit 52 performs a multi-level evaluation of the occupant emotional level according to the characteristics of the occupant by changing the criteria for determining the occupant emotional level based on the history of the occupant emotional level of each of the plurality of occupants boarding the vehicle. can be performed well.

(Embodiment 2)
In the first embodiment, the retention period of the video data is determined according to the passenger emotional level, but the retention period of the video data may be determined according to the amount of change in the passenger emotional level. The passenger emotional level at time x is s(x), the passenger emotional level at current time t is s(t), the passenger emotional level at past time t-1 is s(t-1), and the passenger emotional level is The amount of change α is α=s(t)/s(t-1)
Find it by

It is assumed that the passenger emotional level is low when the passenger is in an emotional state such as discomfort or anger, and high when the passenger is in a comfortable emotional state or joyful state. When the occupant changes from a comfortable state or an emotional state such as joy to an unpleasant state or an emotional state such as anger, the amount of change α in the passenger's emotional level becomes smaller than 1. Conversely, when the occupant changes from an uncomfortable state or an emotional state such as anger to a comfortable state or an emotional state such as joy, the amount of change α in the passenger's emotional level becomes greater than 1.

Using this amount of change α in the passenger emotion level, the retention period T (time) is
T=1/(α×k)
shall be stipulated as follows. Here, k is a proportionality constant, and can be arbitrarily set depending on the installation environment of the recorder, individual adjustment, etc. When the passenger changes from a comfortable state or an emotional state such as joy to an emotional state such as discomfort or anger, the amount of change α in the passenger emotional level becomes smaller than 1, so the retention period T is inversely proportional to α. become longer. Furthermore, when the occupant changes from an uncomfortable state or an emotional state such as anger to a comfortable state or an emotional state such as joy, the amount of change α in the occupant emotional level becomes greater than 1, so the holding period T becomes shorter.

When the occupant changes from a comfortable state or an emotional state such as joy to an emotional state such as discomfort or anger, a deletion prohibition flag may be added to the video data if the change is large. In this case, if the amount of change α is smaller than a predetermined threshold N, a deletion prohibition flag is added to the video data. For example, when the passenger emotional level is determined in five stages, the threshold value N is set to 0.3, etc., and a deletion prohibition flag is added to the video data when α<0.3.

FIG. 6 is a flowchart showing the procedure of the retention period determination process of the recording control device 50 according to the second embodiment. The recording processing unit 53 of the recording control device 50 acquires the current occupant emotion level s(t) and the past occupant emotion level s(t-1) from the occupant emotion determination unit 52 (S11), and calculates the amount of change α=s. (t)/s(t-1) is calculated (S12). The recording processing unit 53 determines whether the amount of change α is smaller than a predetermined threshold N (S13).

If the amount of change α is smaller than the predetermined threshold N (S13: YES), the recording processing unit 53 adds a deletion prohibition flag to the video data (S14) and ends the process. When the recording processing unit 53 determines no in step S13 (S13: NO), the recording processing unit 53 calculates the retention period T=1/(α×k) (S15), and ends the process.

The recording control device 50 lengthens the retention period T in accordance with the amount of change α in the occupant's emotional level when the occupant changes from a comfortable state or an emotional state such as joy to an unpleasant state or an emotional state such as anger. Thus, the video data can be left in the recording section 20 for a long time. Furthermore, when the occupant changes from an uncomfortable state or an emotional state such as anger to a comfortable state or an emotional state such as joy, the recording control device 50 controls the retention period T according to the amount of change α in the occupant emotional level. can be shortened so that video data is deleted faster.

(Modified example)
In the first and second embodiments described above, the recording control device 50 may change the retention period of the video data recorded immediately before to become longer when the change in the occupant emotional level is large. In particular, if the occupant changes from a comfortable state or an emotional state such as joy to an emotional state such as discomfort or anger, and the passenger's emotional level changes significantly at that time, the retention period of the last recorded video data may be extended. change in the direction of

If the occupant's emotional state changes significantly from being comfortable or happy to being uncomfortable or angry, there is a possibility that there is danger, an accident, or other factor that makes the occupant uncomfortable around the vehicle. expensive. However, in such a case, since the passenger emotional level is small before the passenger emotional level changes significantly, the retention period T of the immediately preceding video data is determined to be short. By changing the retention period of this video data in the direction of increasing the length, video data including the immediately preceding video data can be retained in the recording unit 20 for a longer period of time. The recording control device 50 may add a deletion prohibition flag to the immediately previous recorded video data when the passenger emotional level changes significantly. When changing the retention period in the direction of increasing the retention period, it is preferable to set the retention period to be the same as the retention period T of the video data immediately after the occupant emotional level changes significantly.

In the above-described embodiment, an example was shown in which the passenger emotion level is determined in multiple stages of five stages, but the determination of the passenger emotion level may be determined by setting arbitrary multiple stages such as 0 to 100 or -5 to 5. You may. Further, although examples have been shown in which the retention period is 30 minutes, 4 hours, 12 hours, etc., the recording control device 50 can arbitrarily determine the retention period, which can be long or short. Further, the recording control device 50 sets the retention period to 0 minutes when the emotional state such as a comfortable state or joy is the highest, and for example, in the above example, the passenger emotional level is 5, so that the video data is not recorded in the recording unit 20. You can also do this.

Furthermore, in the above embodiment, the occupant's emotions are described based on the emotional states of comfortable state, unpleasant state, joy, and anger, but are not limited to these emotional states, such as sadness, surprise, impatience, and dismay. The emotional states of various occupants can be estimated and used in this device. Further, the imaging unit 10 may be configured to image not only the exterior of the vehicle but also the interior of the vehicle, and the recording unit 20 may record video data of the interior of the vehicle.

Next, features of the recording control device 50, recording control method, and recording control program according to the above-described embodiment and modification will be explained.
The recording control device 50 according to the embodiment and the modification includes a video data acquisition section 51, an occupant emotion determination section 52, and a recording processing section 53. The video data acquisition unit 51 acquires video data obtained by capturing images of the surroundings of the vehicle. The occupant emotion determination unit 52 estimates the occupant's emotion based on information from the biosensor 30 that detects biometric information of the occupant in the vehicle interior, and determines the occupant's emotional level. The recording processing unit 53 determines the retention period of the video data based on the passenger emotion level determined by the passenger emotion determination unit 52, and causes the recording unit 20 to record the video data. Thereby, the recording control device 50 can determine the retention period of video data according to the passenger emotional level. For example, the recording control device 50 can leave video data in the recording unit 20 for a long time when an occupant of the vehicle is in an uncomfortable state or an emotional state such as anger, assuming that an accident or other abnormality may occur around the vehicle. . Furthermore, the recording processing unit 53 determines the delimiter of the video data based on the passenger emotion level determined by the passenger emotion determination unit 52, and causes the recording unit to record the video data. Thereby, the recording control device 50 can determine the division positions of the video data according to the passenger emotional level.

Further, the occupant emotion determination unit 52 changes the criteria for determining the occupant emotion level based on the estimated history of the occupant emotion. Thereby, the recording control device 50 can evaluate the occupant emotional level in multiple stages according to the characteristics of the occupant.

Further, the recording processing unit 53 changes the retention period of the video data recorded immediately before when the change in the occupant emotion level determined by the occupant emotion determining unit 52 is large. As a result, the recording control device 50 adjusts the retention period in the recording unit 20 including the immediately preceding video data, for example, when there is a high possibility that there is a danger, accident, or other factor that makes the occupants uncomfortable around the vehicle. It can be changed in the direction of increasing length.

Furthermore, the recording processing unit 53 determines the timing to delete the video data from the recording unit 20 based on the retention period. Thereby, the recording control device 50 can secure an empty area for recording in the recording unit 20, which has a limited recording capacity, and can record new video data.
Further, the occupants include the driver and the fellow passenger, and the occupant emotion determination unit 52 determines the occupant emotion level of the driver and the fellow passenger, and determines the occupant emotion level of the driver and the biological information of the fellow passenger. The overall passenger emotional level is determined based on the passenger emotional level of the fellow passenger weighted using the method. Thereby, the recording control device 50 can determine the retention period of video data based on the overall emotional level of the driver and fellow passengers.

The recording control method according to the embodiment and the modification includes a video data acquisition step, an occupant emotion determination step, and a recording processing step. The image data acquisition step acquires image data obtained by capturing an image of the surroundings of the vehicle. The occupant emotion determination step estimates the occupant's emotion based on information from the biosensor 30 that detects biometric information of the occupant in the vehicle interior, and determines the occupant's emotional level. The recording processing step determines a retention period for the video data based on the passenger emotion level determined in the passenger emotion determination step, and causes the recording unit 20 to record the video data. With this recording control method, the retention period of video data can be determined according to the emotional level of the occupant. For example, when an occupant of a vehicle is in an uncomfortable state or an emotional state such as anger, video data can be retained in the recording unit 20 for a long time considering that an accident or other abnormality may occur around the vehicle.

The recording control program according to the embodiment and the modification causes the computer to execute a video data acquisition step, an occupant emotion determination step, and a recording processing step. The image data acquisition step acquires image data obtained by capturing an image of the surroundings of the vehicle. The occupant emotion determination step estimates the occupant's emotion based on information from the biosensor 30 that detects biometric information of the occupant in the vehicle interior, and determines the occupant's emotional level. The recording processing step determines a retention period for the video data based on the passenger emotion level determined in the passenger emotion determination step, and causes the recording unit 20 to record the video data. This recording control program allows the retention period of video data to be determined according to the emotional level of the occupant. For example, when an occupant of a vehicle is in an uncomfortable state or an emotional state such as anger, video data can be retained in the recording unit 20 for a long time considering that an accident or other abnormality may occur around the vehicle.

The above description has been based on the embodiments of the present invention. Those skilled in the art will understand that these embodiments are illustrative and that various modifications and changes are possible and within the scope of the claims of the present invention. It is about to be done. Accordingly, the description and drawings herein are to be regarded in an illustrative rather than a restrictive sense.

20 Recording unit 30 Biosensor 50 Recording control device 51 Video data acquisition unit 52 Occupant emotion determination unit 53 Recording processing unit

Claims (2)

a video data acquisition unit that acquires video data obtained by capturing images of the surroundings of the vehicle;
an occupant emotion determination unit that estimates the emotion of the occupant based on information from a biosensor that detects biometric information of the occupant in the vehicle interior, and determines the occupant emotion level;
a recording processing unit that determines a division position of the video data when the passenger emotion level changes, and causes a recording unit to record the video data having a time length divided at the division position;
Equipped with
The recording processing unit determines a retention period of the video data based on the occupant emotional level and causes the recording unit to record the video data.
A recording control device characterized by: The computer is
a step of acquiring video data of a video of the surroundings of the vehicle;
estimating the emotion of the occupant based on information from a biosensor that detects biometric information of the occupant in the vehicle interior, and determining the occupant's emotional level;
When the passenger emotion level changes, determining a division position of the video data, causing the recording unit to record the video data having a time length divided by the division position , and based on the passenger emotion level, determining a retention period of the video data ;
A recording control method characterized by performing the following.

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