sod_img sod_sharpen_filtering_image(sod_img input);
Spatial filtering of image data. That is, apply a sharpening filter by 8-neighbor Laplacian subtraction. This works only on grayscale images. If you want to convert the colorspace of your input picture to the gray color model, call sod_grayscale_image() or sod_grayscale_image_3c() before.
The input image to be processed which must be in the grayscale colorspace. The image can be loaded from disk using sod_img_load_from_file(), from memory (i.e. network socket) via sod_img_load_from_mem() or dynamically created via sod_make_image().
Processed image is returned in an instance of the sod_img object. if something goes wrong during processing, then an empty image is returned via sod_make_empty_image(). Once done, you must release the memory allocated to this object via sod_free_image() to avoid memory leaks.
Checkout the introduction course, the C/C++ samples on the download page or refer to the SOD Github Repository.
sod_canny_edge_image • sod_hilditch_thin_image • sod_image_find_blobs • sod_hough_lines_detect • sod_crop_image.