proc vips_canny(input: ptr VipsImage; output: ptr ptr VipsImage): cint {.
    ...raises: [], tags: [], forbids: [].}

proc vips_compass(input: ptr VipsImage; output: ptr ptr VipsImage;
                  mask: ptr VipsImage): cint {....raises: [], tags: [], forbids: [].}

proc vips_conv(input: ptr VipsImage; output: ptr ptr VipsImage;
               mask: ptr VipsImage): cint {....raises: [], tags: [], forbids: [].}

proc vips_conva(input: ptr VipsImage; output: ptr ptr VipsImage;
                mask: ptr VipsImage): cint {....raises: [], tags: [], forbids: [].}

proc vips_convasep(input: ptr VipsImage; output: ptr ptr VipsImage;
                   mask: ptr VipsImage): cint {....raises: [], tags: [],
    forbids: [].}

proc vips_convf(input: ptr VipsImage; output: ptr ptr VipsImage;
                mask: ptr VipsImage): cint {....raises: [], tags: [], forbids: [].}

proc vips_convi(input: ptr VipsImage; output: ptr ptr VipsImage;
                mask: ptr VipsImage): cint {....raises: [], tags: [], forbids: [].}

proc vips_convsep(input: ptr VipsImage; output: ptr ptr VipsImage;
                  mask: ptr VipsImage): cint {....raises: [], tags: [], forbids: [].}

proc vips_fastcor(input: ptr VipsImage; reference: ptr VipsImage;
                  output: ptr ptr VipsImage): cint {....raises: [], tags: [],
    forbids: [].}

proc vips_gaussblur(input: ptr VipsImage; output: ptr ptr VipsImage;
                    sigma: cdouble): cint {....raises: [], tags: [], forbids: [].}

proc vips_prewitt(input: ptr VipsImage; output: ptr ptr VipsImage): cint {.
    ...raises: [], tags: [], forbids: [].}

proc vips_scharr(input: ptr VipsImage; output: ptr ptr VipsImage): cint {.
    ...raises: [], tags: [], forbids: [].}

proc vips_sharpen(input: ptr VipsImage; output: ptr ptr VipsImage): cint {.
    ...raises: [], tags: [], forbids: [].}

proc vips_sobel(input: ptr VipsImage; output: ptr ptr VipsImage): cint {.
    ...raises: [], tags: [], forbids: [].}

proc vips_spcor(input: ptr VipsImage; reference: ptr VipsImage;
                output: ptr ptr VipsImage): cint {....raises: [], tags: [],
    forbids: [].}