Method and apparatus for classifying a pixel in the input image and the image processing system

The present disclosure relates to a pixel in the input image classification apparatus and method and an image processing system. The apparatus comprises: a first confidence determining unit configured to determine a first input of each of a plurality of predetermined confidence level for each pixel in the image belonging to the category of the; detecting unit configured to detect by using a said plurality of predetermined categories of a particular class of detectors acquires a detection result of the pixel belonging to a particular category indication; update unit configured to update the first confidence according to the detection result; category determination unit is configured to calculate a first updated confidence determining the input image belongs to each category of the plurality of pixels in the predetermined categories. Thus, the pixel may be better classification to prevent inappropriate multi-class segmentation, and classification performance can be improved.