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This invention relates to the field of image processing, specifically providing an image segmentation processing method, control device, and readable storage medium, aiming to solve the problem of how to achieve more accurate segmentation of subtle categories in images. To this end, the image segmentation processing method of this invention includes: extracting features from the image to be segmented to obtain extracted features and stitched features, wherein the stitched features are obtained by further extracting features from the extracted features; and selecting, according to preset conditions, to perform image segmentation using either the stitched features or the combined stitched features and extracted features, thereby obtaining a segmentation category map. This solution preserves the high resolution of the image and improves the accuracy of image segmentation. During segmentation, in addition to using the stitched features output by the feature extraction network, feature information from the feature extraction stage is also incorporated, providing more referenceable feature information when optimizing the segmentation results, further ensuring the refinement of the segmentation results.