WO2024176352A1 - 人物検出装置、人物検出システム、人物検出方法及び非一時的なコンピュータ可読媒体 - Google Patents
人物検出装置、人物検出システム、人物検出方法及び非一時的なコンピュータ可読媒体 Download PDFInfo
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- WO2024176352A1 WO2024176352A1 PCT/JP2023/006230 JP2023006230W WO2024176352A1 WO 2024176352 A1 WO2024176352 A1 WO 2024176352A1 JP 2023006230 W JP2023006230 W JP 2023006230W WO 2024176352 A1 WO2024176352 A1 WO 2024176352A1
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
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Definitions
- the present disclosure relates to a person detection device, a person detection system, a person detection method, and a non-transitory computer-readable medium.
- the area in which the person appears may be masked from the perspective of protecting personal information. In order to mask the area in which the person appears in the video footage, it is necessary to accurately detect the person from the captured video.
- Patent Document 1 describes a technology for detecting people from an image captured by a camera. Specifically, Patent Document 1 describes dividing a captured image into congested areas and uncongested areas, acquiring a person determination threshold for each area according to the congestion level, generating a threshold map, and detecting people for each of multiple areas using the person determination threshold that corresponds to the area based on the threshold map.
- Patent Document 1 describes changing the person determination threshold for each area depending on the congestion level, but it does not perform person detection for the purpose of masking, and therefore cannot solve the problem.
- the present disclosure has been made to solve these problems, and aims to provide a human detection device, a human detection system, a human detection method, and a non-transitory computer-readable medium that are capable of detecting people accurately and suitably.
- the human detection device includes an acquisition means for acquiring a captured image, an object detection means for detecting a predetermined detection object from the image based on a predetermined object detection score threshold, an adjustment means for lowering the human detection score threshold in a predetermined range of an area in the image that includes the detection object below the human detection score threshold in other areas, and a human detection means for detecting a human from the image based on the human detection score threshold.
- the human detection system includes a photographing device installed in a vehicle for photographing an image of the surroundings of the vehicle, and a human detection device capable of communicating with the photographing device, the human detection device including an acquisition means for acquiring the image photographed by the photographing device, a target detection means for detecting a predetermined detection target from the image based on a predetermined target detection score threshold, an adjustment means for lowering the threshold of the human detection score in a predetermined range of an area in the image that includes the detection target below the threshold of the human detection score in other areas, and a human detection means for detecting a person from the image based on the threshold of the human detection score.
- the human detection method is a method in which a computer acquires a captured video image, detects a predetermined detection target from the video image based on a predetermined target detection score threshold, lowers the human detection score threshold in a predetermined range of an area in the video image that includes the detection target below the human detection score threshold in other areas, and detects a person from the video image based on the human detection score threshold.
- a non-transitory computer-readable medium stores a person detection program that causes a computer to execute the following processes: acquiring a captured image; detecting a predetermined detection target from the image based on a predetermined target detection score threshold; lowering the person detection score threshold in a predetermined range of an area in the image that includes the detection target below the person detection score threshold in other areas; and detecting a person from the image based on the person detection score threshold.
- FIG. 11 is a block diagram showing a configuration of a human detection device according to a first embodiment. 4 is a diagram showing an example of an image acquired by an acquisition unit according to the first embodiment; FIG. 4 is a flowchart showing a human detection method according to the first embodiment.
- FIG. 11 is a block diagram showing a configuration of a human detection system according to a second embodiment.
- FIG. 11 is a block diagram showing a configuration of a human detection device according to a second embodiment.
- 13 is a diagram showing an example of an image acquired by an acquisition unit according to a second embodiment;
- FIG. 10 is a flowchart illustrating a human detection method according to a second embodiment.
- FIG. 11 is a block diagram showing a configuration of a human detection device according to a third embodiment. 13 is a diagram showing an example of an image acquired by an acquisition unit according to a third embodiment;
- FIG. 10 is a flowchart illustrating a human detection method according to a third embodiment.
- FIG. 1 is a block diagram showing a configuration of a human detection device 100 according to the first embodiment.
- the human detection device 100 includes an acquisition unit 110 as an acquisition unit, an object detection unit 120 as an object detection unit, an adjustment unit 130 as an adjustment unit, and a human detection unit 140 as a human detection unit.
- the human detection device 100 is connected to a network 500 (not shown).
- the network 500 may be wired or wireless.
- a photographing device 310 (not shown) and the like are connected to the network 500.
- the photographing device 310 is installed in a vehicle 300 (not shown) and is a device that photographs the surroundings of the vehicle 300.
- the video captured by the photographing device 310 is a video, and includes a plurality of consecutive frames arranged in order of the lapse of the photographing time.
- the frame is still image data captured by the photographing device 310.
- the acquisition unit 110 acquires video captured by the imaging device 310 installed in the vehicle 300.
- the video includes multiple frames.
- the video captured by the imaging device 310 is transmitted from the imaging device 310 to the human detection device 100 via the network 500.
- the video acquired by the acquisition unit 110 may be video captured by an imaging device other than the imaging device 310 installed in the vehicle 300, such as a surveillance camera.
- the target detection unit 120 detects a predetermined detection target from the video acquired by the acquisition unit 110 based on a threshold value of a predetermined target detection score.
- the predetermined detection target include moving objects such as motorcycles and four-wheeled vehicles.
- a motorcycle is used as an example of the predetermined detection target.
- the target detection unit 120 detects a motorcycle for each frame included in the video based on a threshold value of a motorcycle detection score as a predetermined target detection score.
- the target detection unit 120 detects a motorcycle using a trained motorcycle detection model (not shown).
- the motorcycle detection score is a score calculated by the target detection unit 120 using the motorcycle detection model for each detection frame area of a predetermined size (for example, M ⁇ N pixels (M and N are integers of 2 or more)) from the frame.
- the motorcycle detection score is a higher value in an area where a motorcycle is likely to be present than in other areas.
- the threshold value of the predetermined motorcycle detection score is a preset value and is used when detecting a motorcycle from the frames that constitute the video.
- the target detection unit 120 determines that a motorcycle is present in the area.
- motorcycles include motorcycles, bicycles, and electric kickboards.
- machine learning may be deep learning, but is not limited thereto.
- the method of calculating the motorcycle detection score is not limited to the above, and other existing technologies can be applied.
- the adjustment unit 130 lowers the threshold value of the human detection score in a predetermined range of an area in the frame that includes the motorcycle.
- the predetermined range is a range of a predetermined size that is appropriately set depending on the purpose of human detection.
- the person detection unit 140 detects people from the video acquired by the acquisition unit 110 based on a predetermined person detection score threshold. Specifically, the person detection unit 140 detects people for each frame included in the video. The person detection unit 140 detects people using a trained person detection model (not shown). The person detection score is a score calculated by the person detection unit 140 using the person detection model for each detection frame area of a predetermined size (e.g., M ⁇ N pixels (M and N are integers equal to or greater than 2)) from the frame. The person detection score is higher in areas where a person is likely to be present than in other areas.
- the predetermined person detection score threshold is a preset value and is used when detecting people from frames constituting the video.
- the person detection score threshold may be set to a different value depending on the area in the frame. Specifically, the person detection score threshold is adjusted by the adjustment unit 130 in a predetermined case. If the person detection score in an area in the frame is equal to or greater than the person detection score threshold, the person detection unit 140 determines that a person is included in the area.
- the method for calculating the person detection score is not limited to the above, and other existing technologies can be applied.
- FIG. 2 shows an example of a frame 10 included in the video acquired by the acquisition unit 110.
- the frame 10 shown in FIG. 2 shows a person 30 riding a bicycle 20.
- the object detection unit 120 detects the bicycle 20 as a two-wheeled vehicle.
- the area R1 corresponding to the bicycle 20 detected by the object detection unit 120 is shown by a two-dot chain line.
- the adjustment unit 130 lowers the threshold of the person detection score in an area R2 of a predetermined range including the area R1.
- the area R2 of the predetermined range is shown by a dashed line.
- the person detection unit 140 detects a person from the frame.
- the acquisition unit 110 acquires a video captured by a camera (step S101).
- the object detection unit 120 detects a motorcycle from a frame included in the video based on a predetermined motorcycle detection score threshold (step S102).
- the adjustment unit 130 adjusts the person detection score threshold (step S103). Specifically, when a motorcycle is detected from the video, the adjustment unit 130 lowers the person detection score threshold in a predetermined range of region R2 including the motorcycle in the frame.
- the person detection unit 140 detects a person from the frame constituting the video based on a predetermined person detection score threshold (step S104).
- the person detection score threshold in the predetermined range of region R2 including the motorcycle is lower than the person detection score thresholds in other regions. Therefore, the person detection unit 140 can accurately detect the person 30 riding the motorcycle 20. This makes it possible to accurately detect the person 30 in the region R2 that includes the motorcycle 20 and perform masking processing from the perspective of protecting personal information. At the same time, it is possible to avoid the inconvenience of erroneously detecting a person and performing masking processing in regions other than the region R2 that includes the motorcycle 20.
- the human detection device 100 detects people by lowering the human detection score threshold in areas where it is highly likely that a person is included (area R2 of a predetermined range including the motorcycle), and therefore can detect people with high accuracy. Furthermore, the human detection score threshold cannot be lowered in areas where it is low likely that a person is included (areas other than area R2 including the motorcycle 20), and therefore it is possible to avoid the inconvenience of erroneously detecting people in these areas. Therefore, the human detection device 100 according to this embodiment can detect people with high accuracy and suitability.
- the human detection device 100 includes a processor, a memory, and a storage device, which are not shown in the figure.
- the storage device stores a computer program that implements the processing of the human detection method according to this embodiment.
- the processor then loads the computer program from the storage device into the memory and executes the computer program. In this way, the processor realizes the functions of the acquisition unit 110, the object detection unit 120, the adjustment unit 130, and the human detection unit 140.
- the acquisition unit 110, the object detection unit 120, the adjustment unit 130, and the person detection unit 140 may each be realized by dedicated hardware. Furthermore, some or all of the components of each device may be realized by general-purpose or dedicated circuits, processors, etc., or a combination of these. These may be configured by a single chip, or may be configured by multiple chips connected via a bus. Some or all of the components of each device may be realized by a combination of the above-mentioned circuits, etc., and programs. Furthermore, a CPU (Central Processing Unit), GPU (Graphics Processing Unit), FPGA (field-programmable gate array), etc. may be used as the processor.
- CPU Central Processing Unit
- GPU Graphics Processing Unit
- FPGA field-programmable gate array
- the multiple information processing devices, circuits, etc. may be centrally arranged or distributed.
- the information processing devices, circuits, etc. may be realized as a client-server system, cloud computing system, etc., in a form in which each is connected via a communication network.
- the functions of the human detection device 100 may be provided in the form of SaaS (Software as a Service).
- ⁇ Embodiment 2> 4 is a block diagram showing the configuration of a human detection system 200 according to embodiment 2.
- the human detection system 200 includes at least a photographing device 310 and a human detection device 400, and may further include a recording device 320.
- Each of the photographing device 310 and the recording device 320 is connected to the human detection device 400 via a network 500. Note that descriptions that overlap with those of embodiment 1 will be omitted as appropriate.
- the person detection system 200 is a system for detecting a person from an image captured by the vehicle 300.
- the vehicle 300 is, for example, an automobile, but may be a vehicle other than an automobile, such as a motorcycle or a bicycle.
- the vehicle 300 is equipped with a photographing device 310 and a recording device 320.
- the photographing device 310 is a device that captures the scenery around the vehicle 300, for example, a drive recorder.
- the photographing device 310 includes a photographing unit 311 and a communication unit 312.
- the photographing unit 311 is a camera.
- the photographing unit 311 captures, for example, the scenery in front of the vehicle 300, that is, the scenery that can be seen by a driver seated in the driver's seat of the vehicle 300.
- the communication unit 312 is a communication interface with the network 500.
- the communication unit 312 transmits the image captured by the photographing unit 311 to the person detection device 400 via the network 500.
- the recording device 320 is a device that records the traveling speed of the vehicle 300.
- the recording device 320 includes a measurement unit 321 and a communication unit 322.
- the measurement unit 321 measures the traveling speed of the vehicle 300.
- the communication unit 322 is a communication interface with the network 500.
- the communication unit 322 transmits speed information including the speed measured by the measurement unit 321 to the human detection device 400 via the network 500.
- FIG. 5 is a block diagram showing the configuration of the human detection device 400.
- the human detection device 400 includes a memory 410, a communication unit 420, a storage unit 430, and a control unit 440.
- the memory 410 is a storage area that temporarily stores the processing contents of the control unit 440, and is, for example, a volatile storage device such as a RAM (Random Access Memory).
- the communication unit 420 is an interface that communicates with the outside of the human detection device 400.
- the storage unit 430 is a storage device that stores a human detection score threshold 431, a program 432, and the like.
- the human detection score threshold 431 is a numerical value used when detecting a person from a frame included in a video, and a different value may be set depending on the area within the frame. Specifically, the human detection score threshold is adjusted by the adjustment unit 442 in specified cases.
- the program 432 is a computer program in which the human detection process according to this embodiment is implemented.
- the control unit 440 includes an acquisition unit 441, an adjustment unit 442, a person detection unit 443, and a masking unit 444.
- the control unit 440 is a control device that controls the operation of the person detection device 400, and is, for example, a processor such as a CPU.
- the control unit 440 loads the program 432 from the storage unit 430 into the memory 410 and executes it. In this way, the control unit 440 realizes the functions of the acquisition unit 441, the adjustment unit 442, the person detection unit 443, and the masking unit 444.
- the acquisition unit 441 acquires the video transmitted from the imaging device 310.
- the video includes multiple consecutive frames.
- the video may also include identification information, time information, and the like.
- the identification information is information for identifying the vehicle 300 in which the imaging device 310 that captured the video is installed.
- the time information is information on the time when the video was captured.
- the acquisition unit 441 may acquire speed information transmitted from the recording device 320.
- the speed information includes at least information on the traveling speed of the vehicle 300, and may further include identification information and time information.
- the time information included in the speed information is information on the time when the traveling speed was recorded.
- the adjustment unit 442 lowers the threshold of the human detection score in the peripheral region of a frame included in the video.
- the threshold of the human detection score in the peripheral region of the frame becomes lower than the threshold of the human detection score in the central region, which is an area other than the peripheral region.
- the central region is an area that is appropriately set depending on the purpose of human detection, and is a range of a predetermined size that includes the center of the frame.
- the center of the frame and the center of the central region may or may not coincide with each other.
- the person detection unit 443 detects people from the video acquired by the acquisition unit 441. Specifically, the person detection unit 443 calculates a person detection score for each frame constituting the video acquired by the acquisition unit 441. The method of calculating the person detection score by the person detection unit 443 is similar to that of the person detection unit 140, so the description thereof will be omitted. Next, the person detection unit 443 determines whether the calculated person detection score is equal to or greater than the person detection score threshold 431. The person detection unit 443 calculates and determines the person detection score for each of the multiple frames.
- the person detection score threshold 431 is a preset numerical value, and is used when detecting people from the frames constituting the video. The person detection score threshold 431 may be set to a different value depending on the area in the frame.
- the person detection score threshold 431 is adjusted by the adjustment unit 442 in a predetermined case.
- the person detection unit 443 determines that a person is included in a location in the frame where the person detection score is equal to or greater than the person detection score threshold 431.
- the masking unit 444 performs a masking process on the area in the frame that corresponds to the person detected by the person detection unit 443.
- the masking process is image processing that is performed on the area so that the person cannot be identified, such as a solid color process or a filter process.
- the masking unit 444 may also perform a masking process on a part of the area that corresponds to the person in the frame (for example, the part that corresponds to the face).
- FIG. 6 shows an example of a frame 10A included in an image acquired by the acquisition unit 441.
- Frame 10A shown in FIG. 6 shows a person 30A and a vehicle 40A traveling forward on a roadway 50A.
- the adjustment unit 442 lowers the threshold 431 of the person detection score in the peripheral region R4.
- a central region R5 other than the peripheral region R4 is shown by a dashed line.
- the person detection unit 443 detects a person from the frame. Note that the threshold 431 of the person detection score in the peripheral region R4 is lowered below the threshold 431 of the person detection score in the central region R5, so that a person is easier to detect in the peripheral region R4 than in the central region R5.
- a region R6 corresponding to the person 30A detected by the person detection unit 443 is shown by a dashed line.
- the acquisition unit 441 acquires the image transmitted from the image capture device 310 (step S201).
- the adjustment unit 442 lowers the person detection score threshold 431 for the peripheral region R4 (step S202).
- the person detection unit 443 detects a person from the frame constituting the image based on a predetermined person detection score threshold (step S203).
- the masking unit 444 performs a masking process on the region corresponding to the person in the frame (step S204).
- the person detection score threshold for the peripheral region R4 is lower than the person detection score threshold for the central region R5.
- the person detection unit 443 can detect the person 30A more accurately in the peripheral region R4 than in the central region R5. This makes it possible to accurately detect the person 30A in the peripheral region R4 and perform a masking process, and to avoid the inconvenience of erroneously detecting a person in the central region R5 and performing a masking process.
- the human detection device 400 detects people by lowering the threshold of the human detection score in areas where it is highly likely that a person is included (peripheral area R4), and therefore can detect people with high accuracy. Furthermore, the threshold of the human detection score cannot be lowered in areas where it is low likely that a person is included (central area R5), and therefore it is possible to avoid the inconvenience of erroneously detecting a person in this area R5. Therefore, the human detection device 400 according to this embodiment can detect people accurately and suitably.
- Fig. 8 is a block diagram showing the configuration of a human detection device 600 according to the third embodiment.
- the human detection device 600 differs from the human detection device 400 shown in Fig. 5 in that it includes a control unit 640 instead of the control unit 440.
- the control unit 640 includes a roadway detection unit 641 and an adjustment unit 642 that are different from the respective configurations included in the control unit 440. Therefore, the configurations of the acquisition unit 441, the human detection unit 443, and the masking unit 444 of the control unit 640 overlap with those of the second embodiment, and therefore will not be described as appropriate.
- the control unit 640 includes an acquisition unit 441, a roadway detection unit 641 as roadway detection means, an adjustment unit 642, a person detection unit 443, and a masking unit 444.
- the acquisition unit 441 acquires video from the imaging device 310, and may also acquire speed information from the recording device 320.
- the person detection unit 443 detects people based on a threshold value of the person detection score for each of a plurality of frames constituting the video acquired by the acquisition unit 441.
- the masking unit 444 performs masking processing on the area in the frame corresponding to the person detected by the person detection unit 443.
- the roadway detection unit 641 detects the roadway from the video acquired by the acquisition unit 441 based on a predetermined roadway detection score threshold. Specifically, the roadway detection unit 641 detects the roadway for each frame included in the video. The roadway detection unit 641 detects the roadway using a trained roadway detection model (not shown). The roadway detection score is a score calculated by the roadway detection unit 641 for each area of a predetermined size in the frame using the roadway detection model. The roadway detection score is higher in areas where a roadway is likely to exist than in other areas.
- the predetermined roadway detection score threshold is a preset value and is used when detecting a roadway from the frames that make up the video.
- the roadway detection unit 641 determines that a roadway exists in the area.
- the roadway is a part of a road (excluding bicycle lanes) intended exclusively for vehicle traffic, and includes shoulders, side strips, and trackbeds.
- the method for calculating the roadway detection score is not limited to the above, and other existing technologies can be applied.
- the adjustment unit 642 lowers the threshold of the person detection score in the area other than the area corresponding to the roadway in the frame. In other words, the threshold of the person detection score in the area other than the area corresponding to the roadway in the frame becomes lower than the threshold of the person detection score in the area corresponding to the roadway.
- FIG. 9 shows an example of a frame 10B included in the video acquired by the acquisition unit 441.
- a person 30B, a vehicle 40B traveling forward, and a roadway 50B on which the vehicle 40B is traveling are shown.
- the roadway detection unit 641 detects the roadway 50B.
- the area R7 corresponding to the roadway 50B detected by the roadway detection unit 641 is shown by a dashed line.
- the adjustment unit 642 lowers the threshold 431 of the person detection score in areas other than the area R7.
- the person detection unit 443 detects a person from the frame.
- the acquisition unit 441 acquires the video transmitted from the image capture device 310 (step S301).
- the roadway detection unit 641 detects the roadway from the frames included in the video based on a predetermined roadway detection score threshold (step S302).
- the adjustment unit 642 lowers the person detection score threshold 431 of the area other than the area R7 corresponding to the roadway in the frame (step S303).
- the person detection unit 443 detects a person from the frame constituting the video based on a predetermined person detection score threshold (step S304).
- the masking unit 444 performs a masking process on the area corresponding to the person in the frame (step S305).
- the person detection score threshold in the area other than the area R7 corresponding to the roadway is lower than the person detection score threshold of the area R7. Therefore, the person detection unit 443 can detect the person 30A more accurately in the area other than the area R7 corresponding to the roadway than in the area R7. This allows the person 30A to be accurately detected and masked in areas other than the area R7 corresponding to the roadway, while avoiding the inconvenience of erroneously detecting a person in the area R7 and performing masking.
- the human detection device 600 detects people by lowering the human detection score threshold in areas where it is highly likely that a person is included (areas other than area R7 corresponding to the roadway), and therefore can detect people with high accuracy. Furthermore, because the human detection score threshold cannot be lowered in areas where it is low likely that a person is included (area R7 corresponding to the roadway), it is possible to avoid the inconvenience of erroneously detecting a person in this area R7. Therefore, the human detection device 600 according to this embodiment can detect people with high accuracy and suitability.
- Non-transitory computer readable medium includes various types of tangible storage medium.
- Examples of non-transitory computer readable medium include magnetic recording media (e.g., flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (e.g., magneto-optical disks), CD-ROM (Read Only Memory), CD-R, CD-R/W, DVD (Digital Versatile Disc), and semiconductor memory (e.g., mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (Random Access Memory)).
- magnetic recording media e.g., flexible disks, magnetic tapes, hard disk drives
- magneto-optical recording media e.g., magneto-optical disks
- CD-ROM Read Only Memory
- CD-R Compact Only Memory
- CD-R/W Compact Disc
- DVD Digital Versatile Disc
- semiconductor memory e.g., mask ROM, PROM (Programmable ROM), EPROM (Erasable
- the program may also be provided to the computer by various types of transitory computer readable medium.
- Examples of transitory computer readable medium include electrical signals, optical signals, and electromagnetic waves.
- the temporary computer-readable medium can provide the program to the computer via a wired communication path, such as an electric wire or optical fiber, or via a wireless communication path.
- the present disclosure is not limited to the above-mentioned embodiment, and can be modified as appropriate without departing from the spirit of the present disclosure.
- the present disclosure may be implemented by appropriately combining each embodiment.
- the image capture device 310 of each vehicle 300 may be equipped with the functions of the object detection unit 120, adjustment unit 130, and person detection unit 140 of the human detection device 100.
- the image capture device 310 of each vehicle 300 may be equipped with the functions of the adjustment unit 442, person detection unit 443, and masking unit 444 of the human detection device 400.
- the image capture device 310 of each vehicle 300 may be equipped with the functions of the roadway detection unit 641, adjustment unit 642, person detection unit 443, and masking unit 444 of the human detection device 600. In this way, the image capture device 310 of each vehicle 300 can individually perform person detection and masking processing.
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Abstract
Description
<実施形態1>
図1は、実施形態1に係る人物検出装置100の構成を示すブロック図である。人物検出装置100は、取得手段としての取得部110、対象検出手段としての対象検出部120、調整手段としての調整部130、及び人物検出手段としての人物検出部140を備える。人物検出装置100は、図示しないネットワーク500に接続されている。ネットワーク500は、有線であってもよいし、無線であってもよい。ネットワーク500には、図示しない撮影装置310等が接続されている。撮影装置310は、図示しない車両300に設置されており、当該車両300の周囲を撮影する装置である。撮影装置310が撮影した映像は、動画であり、撮影時間の経過順に並ぶ連続した複数のフレームを含む。ここで、フレームとは、撮影装置310によって撮影された静止画データである。
図4は、実施形態2に係る人物検出システム200の構成を示すブロック図である。人物検出システム200は、少なくとも撮影装置310及び人物検出装置400を備え、さらに記録装置320を備えていてもよいものとする。撮影装置310及び記録装置320のそれぞれは、ネットワーク500を介して人物検出装置400に接続されている。尚、実施形態1と重複する説明については適宜省略する。
図8は、実施形態3に係る人物検出装置600の構成を示すブロック図である。人物検出装置600は、図5に示した人物検出装置400に比較して、制御部440に代えて制御部640を備える点で異なる。制御部640は、車道検出部641及び調整部642の構成が、制御部440が備える各構成と異なる。そのため、制御部640の取得部441、人物検出部443及びマスキング部444の構成については実施形態2と重複するため、説明を適宜省略する。
20 自転車(二輪車)
30,30A,30B 人物
40A,40B 車両
50A,50B 車道
100,400,600 人物検出装置
410 メモリ
420 通信部
430 記憶部
431 閾値
432 プログラム
440,640 制御部
110,441 取得部(取得手段)
120 対象検出部(対象検出手段)
641 車道検出部(車道検出手段)
130,442,642 調整部(調整手段)
140,443 人物検出部(人物検出手段)
444 マスキング部
200 人物検出システム
300 車両
310 撮影装置
311 撮影部
312 通信部
320 記録装置
321 測定部
322 通信部
500 ネットワーク
R1,R2,R3,R4,R5,R6,R7,R8 領域
Claims (9)
- 撮影された映像を取得する取得手段と、
所定の対象検出スコアの閾値に基づいて前記映像から所定の検出対象を検出する対象検出手段と、
前記映像内の前記検出対象を含む所定範囲の領域における人物検出スコアの閾値を、他の領域における前記人物検出スコアの前記閾値よりも下げる調整手段と、
前記人物検出スコアの前記閾値に基づいて前記映像から人物を検出する人物検出手段と、を備える、
人物検出装置。 - 前記検出対象は少なくとも二輪車を含む、
請求項1に記載の人物検出装置。 - 前記映像から車道を検出する車道検出手段をさらに備え、
前記調整手段は、前記映像内の前記車道以外に相当する領域における前記人物検出スコアの前記閾値を、前記車道に相当する領域における前記人物検出スコアの前記閾値よりも下げる、
請求項1に記載の人物検出装置。 - 車両に設置され、前記車両の周囲の映像を撮影する撮影装置と、
前記撮影装置と通信可能な人物検出装置と、を備え、
前記人物検出装置が、
前記撮影装置において撮影された映像を取得する取得手段と、
所定の対象検出スコアの閾値に基づいて前記映像から所定の検出対象を検出する対象検出手段と、
前記映像内の前記検出対象を含む所定範囲の領域における人物検出スコアの閾値を、他の領域における前記人物検出スコアの前記閾値よりも下げる調整手段と、
前記人物検出スコアの前記閾値に基づいて前記映像から人物を検出する人物検出手段と、を備える、
人物検出システム。 - 前記人物検出装置は、
前記映像から車道を検出する車道検出手段をさらに備え、
前記調整手段は、前記映像内の前記車道以外に相当する領域における前記人物検出スコアの前記閾値を、前記車道に相当する領域における前記人物検出スコアの前記閾値よりも下げる、
請求項4に記載の人物検出システム。 - コンピュータが、
撮影された映像を取得し、
所定の対象検出スコアの閾値に基づいて前記映像から所定の検出対象を検出し、
前記映像内の前記検出対象を含む所定範囲の領域における人物検出スコアの閾値を、他の領域における前記人物検出スコアの前記閾値よりも下げ、
前記人物検出スコアの前記閾値に基づいて前記映像から人物を検出する、
人物検出方法。 - コンピュータが、
前記映像から車道をさらに検出し、
前記映像内の前記車道以外に相当する領域における前記人物検出スコアの前記閾値を、前記車道に相当する領域における前記人物検出スコアの前記閾値よりも下げる、
請求項6に記載の人物検出方法。 - コンピュータに、
撮影された映像を取得する処理と、
所定の対象検出スコアの閾値に基づいて前記映像から所定の検出対象を検出する処理と、
前記映像内の前記検出対象を含む所定範囲の領域における人物検出スコアの閾値を、他の領域における前記人物検出スコアの前記閾値よりも下げる処理と、
前記人物検出スコアの前記閾値に基づいて前記映像から人物を検出する処理と、
を実行させる人物検出プログラムが格納された非一時的なコンピュータ可読媒体。 - コンピュータに、
前記映像から車道をさらに検出する処理と、
前記映像内の前記車道以外に相当する領域における前記人物検出スコアの前記閾値を、前記車道に相当する領域における前記人物検出スコアの前記閾値よりも下げる処理と、
を実行させる人物検出プログラムが格納された、請求項8に記載の非一時的なコンピュータ可読媒体。
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| PCT/JP2023/006230 WO2024176352A1 (ja) | 2023-02-21 | 2023-02-21 | 人物検出装置、人物検出システム、人物検出方法及び非一時的なコンピュータ可読媒体 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011129013A (ja) * | 2009-12-21 | 2011-06-30 | Toyota Motor Corp | 走行支援装置 |
| JP2011253214A (ja) * | 2010-05-31 | 2011-12-15 | Toyota Motor Corp | 歩行者検出装置 |
| WO2017221643A1 (ja) * | 2016-06-22 | 2017-12-28 | ソニー株式会社 | 画像処理装置、画像処理システム、および画像処理方法、並びにプログラム |
| JP2021013146A (ja) * | 2019-07-09 | 2021-02-04 | キヤノン株式会社 | 画像処理装置、画像処理方法 |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011129013A (ja) * | 2009-12-21 | 2011-06-30 | Toyota Motor Corp | 走行支援装置 |
| JP2011253214A (ja) * | 2010-05-31 | 2011-12-15 | Toyota Motor Corp | 歩行者検出装置 |
| WO2017221643A1 (ja) * | 2016-06-22 | 2017-12-28 | ソニー株式会社 | 画像処理装置、画像処理システム、および画像処理方法、並びにプログラム |
| JP2021013146A (ja) * | 2019-07-09 | 2021-02-04 | キヤノン株式会社 | 画像処理装置、画像処理方法 |
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