Image collecting device as well as human face identification system and method using the same
An image acquisition device and image technology, applied in character and pattern recognition, instruments, computer components, etc., can solve problems such as not working properly, difficult to obtain effects, and inconspicuous effects, so as to ensure safety and eliminate ambient light Effect
Active Publication Date: 2009-12-30
北京中科奥森数据科技有限公司
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[0012] However, a major problem still exists in the existing face recognition technology is that the change of ambient light has a great influence on the facial features, and the recognition effect of the face images obtained under different ambient light is very different, especially It will not work normally under outdoor and strong sunlight conditions
[0013] Although there are currently many methods that can perform compensation, normalization, etc. in face recognition, the effect is not obvious, and the computing power of the processing system is very high, and some even require three-dimensional modeling of faces. Some models assume the shape of the face, and these limitations make the operability of face recognition technology greatly reduced, and it is difficult to achieve good results
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[0059] In order to make the purpose, technical solution and advantages of the present invention clearer, the image acquisition device of the present invention and the face recognition system and method using the device will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0060] The image acquisition device 21 of the present invention uses a narrow-band filter to limit the energy of the captured object, especially the energy of the ambient light reflected by the image sensor to the image sensor, and then uses an active narrow-band high-power laser with a suitable wavelength to diverge Irradiate the acquisition object in a pulsed manner to suppress ambient light, especially strong sunlight, and obtain image information of the acquisition object with better effect.
[0061] Th...
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The invention discloses an image collecting device and a face recognition system and method employing the device. The image collecting device includes an illuminating unit and a shooting unit, the illuminating device comprises a narrow-band illuminating source irradiating collected subjects with active narrow-band high power light with proper wave length after adjustment, the shooting unit includes a narrow-band color filter and an image sensor, the narrow-band color filter limits energy of ambient light which is reflected to the image sensor by the collected subject and enables the image sensor to collect image data information with image characters under illumination of the narrow-band illuminating source. The invention eliminates influence of ambient light to image stability, obtains highly reliable and accurate image character information, and further improves the images identifying effect.
Description
technical field [0001] The invention relates to the technical field of computer image processing and pattern recognition, in particular to an active high-power narrow-band pulsed laser light source to illuminate the object to be collected and process the image during the image collection process to eliminate the impact of ambient light on the image. An image acquisition device affected by stability, and a face recognition system and method using the device belong to the technical field of computer image recognition and processing. Background technique [0002] Biometric technology is a high-tech identification technology that mainly relies on the physical characteristics of the human body for identity verification. Generally speaking, human body characteristics such as fingerprints, palm prints, iris, deoxyribonucleic acid (DNA) and facial appearance have the uniqueness, stability, and inability to be copied, stolen or forgotten inherent in the human body, while Since these...
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IPC IPC(8): G06K9/00G06K9/20
Inventor 李子青刘冬
Owner 北京中科奥森数据科技有限公司