FILTERING METHOD FOR DETECTING ORIENTATION OF EDGE FROM IMAGE AND IMAGE RECOGNITION METHOD USING THEREOF

摘要

PURPOSE: An image filtering method detecting a direction component of an edge and an image recognition method are provided to guarantee consistency of a filtering process in an image, thereby generating an output image showing similar effect which seems to enable people to recognize an object. CONSTITUTION: An image filtering device filters an original image by each generated filter corresponding to a plurality of channels(320). The image filtering device selects a value of a channel in which an image unit value is maximized in each image unit(330). The image filtering device filters a second image generated by each generated filter corresponding to a plurality of channels. The device compares a channel of the second image with a channel of a third image. The device generates an output image in which an edge is detected(340). [Reference numerals] (310) Receiving an original image; (320) Generating a plurality of first images by filtering the original image using filters generated by a plurality of channels; (330) Generating second images by selecting the value of the channels which becomes maximum for each image unit from the first images; (340) Generating a plurality of third images by filtering the second images using filters generated by a plurality of channels and generating output images by comparing the channels of the second images and the third images such that the consistency of the channels is maintained; (350) Feeding back the output images as input values; (AA) Start; (BB) End