These operations convolve an image in some way, or are operations based onsimple convolution, or are useful with convolution.
vips_conv()vips_convf()vips_convi()vips_conva()vips_convsep()vips_convasep()vips_compass()vips_gaussblur()vips_sharpen()vips_spcor()vips_fastcor()vips_sobel()vips_scharr()vips_prewitt()vips_canny()