Method for determining quality of iris image based on machine learning
An iris image and determination method technology, which is applied in the fields of instruments, computer parts, character and pattern recognition, etc., can solve the problems such as the inability to accurately reflect the overall quality of the iris image, the quality score is too subdivided, and the indistinguishability is achieved. Improve stability, improve accuracy, reduce the effect of ratio mutation
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[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0034] Today, with the rapid development of iris recognition system, the degradation of iris image quality due to changes in acquisition equipment, external environment and iris itself has become a bottleneck in the development of iris recognition (such as figure 2 The situation after six kinds of iris image quality changes are shown), how to select the image suitable for system processing requirements from a large number of acquired iris images becomes particularly important.
[0035] The present invention proposes that the quality factor, quality score and quality grade involved in the iris image quality determination method based on machine learning are defined as follows:
[0036] Quality factor: refers to a single f...
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