Key point 2: camera imaging core components and key parameters

The working principle of the camera is to convert the light signal into the image signal, so the complex light environment such as strong light, backlight, dark light will directly affect the image quality of the camera. The quality of camera imaging will directly affect the effect and experience of face recognition and living detection. Therefore, developers should also pay attention to the camera imaging core components and key parameters in product selection, so as to ensure that the image quality collected by the front end meets the requirements of face recognition.








Among the three core components of face recognition camera module, lens, image sensor and DSP image processor, the lens mainly undertakes the task of capturing objects and focusing the captured image on the image sensor. Its main parameters include field of view angle, aperture, CRA, distortion, glare, etc. The camera module of face recognition generally adopts a fixed focus lens with fast focusing speed, stable imaging quality and accurate light measurement.






For the image sensor which is responsible for converting optical signal into digital signal output, its main parameters include sensor size, effective pixel, pixel size, etc. CMOS sensor with high integration, low power consumption, fast speed and low cost is recommended. Finally, the optimized digital image signal is transmitted to the DSP image processor of face recognition equipment. The high-quality DSP can increase the original chip wide dynamic range by more than 30%.






In order to further facilitate developers, JSK launched a multi scene mode that integrates 6 scenes, including dynamic scenes, backlight scenes and highlight scenes. All scenes are all compatible with a camera, automatically judge the light environment in the scene by camera, and then call the corresponding mode, so as to achieve the best effect of face recognition in a given scene.






According to reports, this is also the most popular face recognition camera module in the hongruan visual open platform industry chain market. The industry chain market is a business platform focused on building the upstream and downstream ecology of the industry, which was launched by hongsoft visual open platform this year. At present, a series of high-quality products, from algorithms to hardware, from whole machine products to various industry solutions, have been launched, which can achieve precise docking between the supply side and the demand side, and effectively shorten the time from demand to landing of face recognition products Between.