Image inspection method

An image inspection method comprising:

• capturing a target object image, wherein the target object image comprises a plurality of graphical features;
• choosing a block image comprising a specific graphical feature of the plurality of graphical features from the target object image;
• capturing all the graphical features of the block image to obtain a region of interest (ROI);
• executing a filtering process or a recovering process on the ROI to obtain a pre-processed region;
• and
• inspecting, according to the pre-processed region, the target object image to determine whether the target object image has defects;
• wherein the step of executing the filtering process on the ROI comprises:
• comparing the ROI with a mask image;
• and
• setting, according to gray values of pixels indicated in the mask image, the gray values of at least one pixel of a periphery of the ROI to a first range value, in order to obtain a remaining region.