CN110222624B - Dynamic human face detection device - Google Patents
Dynamic human face detection device Download PDFInfo
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- CN110222624B CN110222624B CN201910472816.7A CN201910472816A CN110222624B CN 110222624 B CN110222624 B CN 110222624B CN 201910472816 A CN201910472816 A CN 201910472816A CN 110222624 B CN110222624 B CN 110222624B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/161—Detection; Localisation; Normalisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
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Abstract
The invention discloses a dynamic face detection device, which comprises: the device comprises a camera, a light supplementing lamp, a display screen and a processor; the camera, the light supplementing lamp and the display screen are connected with the processor; the display screen is used for entering a screen protection state and displaying according to preset brightness when the dynamic face detection device is in a dormant state; the camera is used for shooting the shooting area in real time to obtain a plurality of shooting images and transmitting the shooting images to the processor; the processor is used for receiving the shot images and comparing the brightness between the shot images of the two adjacent time nodes in real time; and if the brightness change between the photographed images of the two adjacent time nodes exceeds a preset value, activating the dynamic face detection device, starting the light supplementing lamp, controlling the camera to collect the face, and detecting the face. By implementing the embodiment of the invention, the acquisition of the face image in a dark external environment can be realized on the premise of not adding an infrared lamp and a black-and-white camera, and further the face detection is realized.
Description
Technical Field
The present invention relates to the field of face recognition technologies, and in particular, to a dynamic face detection method, a device/terminal device, and a computer readable storage medium.
Background
Along with the progress of science and technology, the dynamic face recognition technology takes the rapid achievements, the personnel identification comparison of the high-speed rail station, the personnel identification ticket checking system of the railway station, the dynamic face detection equipment of customs and the real-name dynamic face attendance equipment of the construction site are typical application cases of dynamic face detection.
In the existing dynamic face recognition equipment, the face recognition method aims at solving the face recognition in a dark environment. The method is characterized in that an infrared light supplementing lamp is required to be added on face recognition equipment, a black-and-white infrared light imaging detection camera is added at the same time, infrared light can be irradiated onto a face under the dark condition, meanwhile, the black-and-white infrared light detection camera can detect black-and-white face images, so that whether a person needs to perform face recognition is judged, if the person needs to recognize, the light supplementing lamp of the face recognition equipment is turned on, the light supplementing lamp irradiates the face again, meanwhile, the color face recognition camera is started to capture the face, the acquisition of the face images is completed, and finally the whole face recognition process is completed. The face recognition under the dark environment is carried out by using the method, an infrared lamp and a black-and-white camera are additionally arranged in the face detection equipment, the implementation scheme is complex, and the production cost and the product development difficulty of the face detection equipment are increased.
Disclosure of Invention
The embodiment of the invention provides a dynamic face detection device which can collect face images in a dark external environment on the premise of not adding an infrared lamp and a black-and-white camera, thereby realizing face detection.
An embodiment of the present invention provides a face detection apparatus, including: the device comprises a camera, a light supplementing lamp, a display screen and a processor; the camera, the light supplementing lamp and the display screen are all connected with the processor;
the display screen is used for displaying according to preset brightness when the dynamic face detection device is in a dormant state;
the camera is used for shooting the shooting area in real time to obtain a plurality of shooting images, and transmitting the shooting images to the processor;
the processor is used for receiving the photographed images and comparing the brightness between the photographed images of two adjacent time nodes in real time; and if the brightness change between the shot images of two adjacent time nodes exceeds a preset value, activating the dynamic face detection device, starting the light supplementing lamp, controlling the camera to acquire the face, and detecting the face.
The embodiment of the invention has the following beneficial effects:
the invention provides a dynamic face detection device which can solve the problems of face image acquisition and recognition under dark external conditions, such as an environment without external illumination at night; when the face detection is not performed, the face detection equipment is in a dormant state, and a display screen is in a screen protection state and can display according to preset brightness to provide illumination for an external environment; when the face detection equipment is in a dormant state, the camera still keeps an on state, a shooting area is shot to obtain a shooting image, then the shooting image is transmitted to the processor, after the shooting image is received by the processor, the shooting images obtained by two adjacent front and rear time nodes are compared, if the brightness change of the two shooting images exceeds a preset value, it is indicated that a user is close to the face detection device and face detection is needed, at the moment, the processor activates the face detection device, controls the light supplementing lamp to be started, the light supplementing lamp can irradiate a face, then controls the camera to collect the face image to perform face detection, so that face detection under a dark external environment can be achieved without additionally installing an infrared lamp and a black-white camera in the whole process, and the production cost and processing difficulty of the face detection device are reduced.
Drawings
Fig. 1 is a schematic structural diagram of a dynamic face detection apparatus according to an embodiment of the present invention.
Reference numerals illustrate: the face detection device 10, the camera 101, the first light supplementing lamp 102, the second light supplementing lamp 103, the display screen 104 and the reflective eave 105.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, a dynamic face detection apparatus 10 according to an embodiment of the present invention includes: a camera 101, a light supplementing lamp, a display screen 104, and a processor (provided inside the face detection apparatus 10, drawn in the figure); the camera 101, the light supplementing lamp and the display screen 104 are all connected with the processor;
the display screen 104 is configured to enter a screen saver state and display the screen saver state with a preset brightness when the dynamic face detection apparatus 10 is in a sleep state;
the camera 101 is configured to perform real-time shooting on a shooting area, obtain a plurality of shot images, and transmit the shot images to the processor;
the processor is used for receiving the photographed images and comparing the brightness between the photographed images of two adjacent time nodes in real time; if the brightness variation between the photographed images of two adjacent time nodes exceeds a preset value, the dynamic face detection device 10 is activated, the light supplementing lamp is turned on, and the camera 101 is controlled to collect the face, so as to perform face detection.
Specifically, when no face detection is performed, the face detection device is in a dormant state, at this time, the light supplementing lamp is turned off, the camera 101 is still in an on state, the display screen 104 is in a screen protection state, the display screen 104 displays a screen protection pattern according to preset brightness, meanwhile weak light is emitted, the preset brightness is relatively low in order to save energy, and the brightness range is between 100LUN and 300LUN, so that when the device is in the dormant state, the display screen 104 can provide weak illumination for an external environment; this illumination is insufficient to cause a significant change in the brightness of the surrounding environment, but is sufficient to cause the brightness of the two images captured by the camera 101 to change in two periods before and after the user approaches the face detection apparatus 10 when the user approaches the face detection apparatus 10.
In the actual situation, when the face detection device is in the dormant state, the camera 101 still keeps in the open state, and continuously shoots the shooting area in real time, so that a series of shooting images can be obtained and transmitted to the processor; in the following description, the shot images of two adjacent time nodes are selected, and the following detection process is described;
of course, in a preferred embodiment, the working process of the camera 101 may also be understood that the camera 101 is in a video recording state, and the video recording is performed on the video recording area in real time to obtain a captured video, and then the captured video is transmitted to the processor, so that when the subsequent images are compared, two adjacent image frames are compared;
the processor compares the shot images of two adjacent time nodes, compares the brightness difference of the two shot images, and if the brightness difference exceeds a preset value, the processor indicates that a user approaches the face detection device 10 at the moment, so that the brightness change of the external environment is caused;
since the light emitted from the screen of the display 104 can provide a certain brightness for the external environment, when the user approaches the face detection apparatus 10, the brightness of the external environment changes due to the shielding of the user. The brightness change can be compared with the brightness learning of the photographed images of the two adjacent time nodes, when the brightness change of the photographed images of the two adjacent time nodes exceeds a preset value, the processor activates the dynamic monitoring device, then controls the light supplementing lamp to be started, and the camera 101 is used for face acquisition to realize face detection.
It should be noted that the preset value can be adjusted according to time conditions to meet different use environments.
In a preferred embodiment, the camera 101 is located directly above the display screen 104. Such an arrangement may enable the display screen 104 to provide a better illumination effect for the imaging area in the vicinity of the imaging.
In a preferred embodiment, the light compensating lamps include a first light compensating lamp 102 and a second light compensating lamp 103, and the first light compensating lamp 102 and the second light compensating lamp 103 are respectively disposed at left and right sides of the camera 101.
In a preferred embodiment, the display screen 104 emits white light when displayed at a preset brightness.
That is, when the display screen 104 displays when entering the screen saver state, white light is emitted, and specifically, the displayed screen saver picture can be set to be full white to enhance the illumination effect under the same brightness.
Of course, in a preferred embodiment, the screen saver picture displayed when the display screen 104 enters the screen saver state may not be completely white, but may be a picture with a partial white area, and may be specifically adjusted according to practical situations.
In a preferred embodiment, the dynamic face detection apparatus 10 further includes a reflective eave 105; the reflective eave 105 is disposed right above the camera 101. The light emitted by the display screen 104 can be radiated to the area where the camera 101 is arranged by arranging the reflective eave 105, so that the illumination effect of the display screen 104 is further provided.
The embodiment of the invention has the following beneficial effects:
the invention provides a dynamic face detection device 10, which can solve the problem of face image acquisition and recognition under dark external conditions, such as an environment without external illumination at night; when the face detection is not performed, the face detection equipment is in a dormant state, the display screen 104 is in a screen protection state, and the display screen 104 displays according to preset brightness to provide illumination for an external environment; when the face detection device is in a dormant state, the camera 101 still keeps an on state, a shooting area is shot to obtain a shooting image, then the shooting image is transmitted to the processor, after the shooting image is received by the processor, the shooting images obtained by two adjacent time nodes are compared, if the brightness change of the two shooting images exceeds a preset value, it is indicated that a user needs to perform face detection when the two shooting images are close to the face detection device 10, the processor activates the face detection device 10 at the moment, the light supplementing lamp is controlled to be turned on, the light supplementing lamp can irradiate a face, then the camera 101 is controlled to acquire the face image, face detection is performed, so that the face detection under a dark external environment can be realized without additionally installing the infrared lamp and the black-white camera 101 in the whole process, and the production cost and the processing difficulty of the face detection device 10 are reduced.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (4)
1. A dynamic face detection apparatus, comprising: the device comprises a camera, a light supplementing lamp, a display screen and a processor; the camera, the light supplementing lamp and the display screen are all connected with the processor;
the display screen is used for entering a screen protection state and displaying according to preset brightness when the dynamic face detection device is in a dormant state, and the display screen emits white light when displaying according to the preset brightness, wherein the brightness range is between 100LUN and 300 LUN;
the camera is used for shooting the shooting area in real time to obtain a plurality of shooting images, and transmitting the shooting images to the processor;
the processor is used for receiving the photographed images and comparing the brightness between the photographed images of two adjacent time nodes in real time; and if the brightness change between the shot images of two adjacent time nodes exceeds a preset value, activating the dynamic face detection device, starting the light supplementing lamp, controlling the camera to acquire the face, and detecting the face.
2. The dynamic face detection apparatus of claim 1, wherein the camera is located directly above the display screen.
3. The dynamic face detection apparatus as claimed in claim 1, wherein the light-compensating lamps include a first light-compensating lamp and a second light-compensating lamp, the first light-compensating lamp and the second light-compensating lamp being disposed on left and right sides of the camera, respectively.
4. The dynamic face detection apparatus of claim 1, further comprising a reflective eave; the light reflecting eave is arranged right above the camera.
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| CN201910472816.7A CN110222624B (en) | 2019-05-31 | 2019-05-31 | Dynamic human face detection device |
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| CN201910472816.7A CN110222624B (en) | 2019-05-31 | 2019-05-31 | Dynamic human face detection device |
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| CN110222624B true CN110222624B (en) | 2023-04-28 |
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| CN112866541A (en) * | 2019-11-12 | 2021-05-28 | 宏碁股份有限公司 | Device control method and electronic device |
| TWI782515B (en) * | 2020-05-15 | 2022-11-01 | 仁寶電腦工業股份有限公司 | Electronic device with auxiliary lighting function and operation method thereof |
| CN112956993B (en) * | 2021-02-20 | 2022-08-12 | 重庆金山医疗技术研究院有限公司 | Image processing system, endoscope system, and endoscope light source standby and start method |
| CN113538801A (en) * | 2021-06-08 | 2021-10-22 | 福建新大陆通信科技股份有限公司 | Control method of face verification storage cabinet |
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| CN104715229B (en) * | 2013-12-17 | 2018-04-10 | 汉王科技股份有限公司 | Face identification device |
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