Image filtering method for detecting orientation component of edge and image recognizing method using the same

An image recognizing method, comprising:

• receiving an original image;
• detecting an edge of a partial image from the original image by means of a predetermined filtering process;
• and
• recognizing an object present in the original image by using the detected edge and characteristic images which are classified and stored in advance,
• wherein the predetermined filtering process includes:
• generating a plurality of first images by filtering the original image with filters respectively generated along a plurality of channels;
• generating a second image by selecting a channel having a maximum value for each image unit, from the generated first images;
• and
• generating an output image whose edge is detected so as to maintain the consistency of channel by filtering the second image with filters respectively
• generated along the plurality of channels to generate a plurality of third images and comparing the channel of the second image with the channels of the third images.