Feature quantitative extraction method, subject taxonomic method and subject distinction method, the feature quantitative extracting equipment, the subject taxonomic device and the subject distinction device, the record medium which records feature quantitative extraction subject classification and the subject distinction program and the said program

摘要

Taxonomic of subject which uses the feature quantitative extraction method of displaying the feature of subject from the picture which subject image pickup is done, not to be based on to the form of that subject, and the feature quantity which is extracted and distinction method is offered. Being the feature quantitative extraction method of extracting the feature quantity from the picture of the subject which image pickup is done with image pickup expedient, the pixel of step and the maximum luminance picture which set the picture territory circle of step and the aforementioned maximum luminance picture which draw up the maximum luminance picture from step and the aforementioned filter bank which draw up the filter bank from the aforementioned picture, center set Cc of the said picture territory circle and radius Rc, (a) position of the pixel (x, y) from ratio with the distance L between the aforementioned center Cc _D and the aforementioned radius Rc, (b) brightness value F of the pixel _D(X, total of finite difference of the brightness value of y) and (c) adjacent pixel, by the fact that the step which draws up the frequency histogram from the step which is projected to 3 dimensional space in the axis and the pixel which is projected to the aforementioned 3 dimensional space is included, the feature quantity is extracted from the picture which subject image pickup is done.