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| VIPS function listUsing VIPS — List of VIPS functions and operators | 
      VIPS has a set of operators each of which computes some useful image 
      processing operation. Each operator is 
      implemented as a GObject class, for example VipsGamma. 
      Classes are identified by their unique nickname, in this 
      case gamma. 
      From the command-line, C++ and most language bindings, you use the 
      nickname to call the operator. For example in C++:
vips::VImage fred = ...; vips::VImage jim = fred.gamma();
or Python:
fred = jim.gamma()
      VIPS has a set of C wrapper functions for calling operators, in this 
      case vips_gamma():
  VipsImage *fred = ...;
  VipsImage *jim;
  if (vips_gamma(fred, &jim, NULL))
    ...error; 
Some operators have many C convenience functions.
This table lists all the VIPS operators with their C convenience functions and a short description. It's supposed to be useful for searching. See the API docs each function links to for more details.
Table 1. VIPS functions and operators
| Operator | Description | C functions | 
|---|---|---|
| CMC2LCh | Transform lch to cmc | vips_CMC2LCh() | 
| CMYK2XYZ | Transform cmyk to xyz | vips_CMYK2XYZ() | 
| HSV2sRGB | Transform hsv to srgb | vips_HSV2sRGB() | 
| LCh2CMC | Transform lch to cmc | vips_LCh2CMC() | 
| LCh2Lab | Transform lch to lab | vips_LCh2Lab() | 
| Lab2LCh | Transform lab to lch | vips_Lab2LCh() | 
| Lab2LabQ | Transform float lab to labq coding | vips_Lab2LabQ() | 
| Lab2LabS | Transform float lab to signed short | vips_Lab2LabS() | 
| Lab2XYZ | Transform cielab to xyz | vips_Lab2XYZ() | 
| LabQ2Lab | Unpack a labq image to float lab | vips_LabQ2Lab() | 
| LabQ2LabS | Unpack a labq image to short lab | vips_LabQ2LabS() | 
| LabQ2sRGB | Convert a labq image to srgb | vips_LabQ2sRGB() | 
| LabS2Lab | Transform signed short lab to float | vips_LabS2Lab() | 
| LabS2LabQ | Transform short lab to labq coding | vips_LabS2LabQ() | 
| XYZ2CMYK | Transform xyz to cmyk | vips_XYZ2CMYK() | 
| XYZ2Lab | Transform xyz to lab | vips_XYZ2Lab() | 
| XYZ2Yxy | Transform xyz to yxy | vips_XYZ2Yxy() | 
| XYZ2scRGB | Transform xyz to scrgb | vips_XYZ2scRGB() | 
| Yxy2XYZ | Transform yxy to xyz | vips_Yxy2XYZ() | 
| abs | Absolute value of an image | vips_abs() | 
| add | Add two images | vips_add() | 
| affine | Affine transform of an image | vips_affine() | 
| analyzeload | Load an analyze6 image | vips_analyzeload() | 
| arrayjoin | Join an array of images | vips_arrayjoin() | 
| autorot | Autorotate image by exif tag | vips_autorot() | 
| avg | Find image average | vips_avg() | 
| bandbool | Boolean operation across image bands | vips_bandbool(),vips_bandand(),vips_bandor(),vips_bandeor(),vips_bandmean() | 
| bandfold | Fold up x axis into bands | vips_bandfold() | 
| bandjoin | Bandwise join a set of images | vips_bandjoin(),vips_bandjoin2() | 
| bandjoin_const | Append a constant band to an image | vips_bandjoin_const(),vips_bandjoin_const1() | 
| bandmean | Band-wise average | vips_bandmean() | 
| bandrank | Band-wise rank of a set of images | vips_bandrank() | 
| bandunfold | Unfold image bands into x axis | vips_bandunfold() | 
| black | Make a black image | vips_black() | 
| boolean | Boolean operation on two images | vips_boolean(),vips_andimage(),vips_orimage(),vips_eorimage(),vips_lshift(),vips_rshift() | 
| boolean_const | Boolean operations against a constant | vips_boolean_const(),vips_andimage_const(),vips_orimage_const(),vips_eorimage_const(),vips_lshift_const(),vips_rshift_const(),vips_boolean_const1(),vips_andimage_const1(),vips_orimage_const1(),vips_eorimage_const1(),vips_lshift_const1(),vips_rshift_const1() | 
| buildlut | Build a look-up table | vips_buildlut() | 
| byteswap | Byteswap an image | vips_byteswap() | 
| cache | Cache an image | vips_cache() | 
| canny | Canny edge detector | vips_canny() | 
| case | Use pixel values to pick cases from an array of images | vips_case() | 
| cast | Cast an image | vips_cast(),vips_cast_uchar(),vips_cast_char(),vips_cast_ushort(),vips_cast_shortcast_uint(),vips_cast_int(),vips_cast_float(),vips_cast_double(),vips_cast_complex(),vips_cast_dpcomplex() | 
| colourspace | Convert to a new colorspace | vips_colourspace() | 
| compass | Convolve with rotating mask | vips_compass() | 
| complex | Perform a complex operation on an image | vips_complex(),vips_polar(),vips_rect(),vips_conj() | 
| complex2 | Complex binary operations on two images | vips_complex2(),vips_cross_phase() | 
| complexform | Form a complex image from two real images | vips_complexform() | 
| complexget | Get a component from a complex image | vips_complexget(),vips_real(),vips_imag() | 
| composite | Blend an array of images with an array of blend modes | vips_composite() | 
| composite2 | Blend a pair of images with a blend mode | vips_composite2() | 
| conv | Convolution operation | vips_conv() | 
| conva | Approximate integer convolution | vips_conva() | 
| convasep | Approximate separable integer convolution | vips_convasep() | 
| convf | Float convolution operation | vips_convf() | 
| convi | Int convolution operation | vips_convi() | 
| convsep | Seperable convolution operation | vips_convsep() | 
| copy | Copy an image | vips_copy() | 
| countlines | Count lines in an image | vips_countlines() | 
| csvload | Load csv from file | vips_csvload() | 
| csvsave | Save image to csv file | vips_csvsave() | 
| dE00 | Calculate de00 | vips_dE00() | 
| dE76 | Calculate de76 | vips_dE76() | 
| dECMC | Calculate decmc | vips_dECMC() | 
| deviate | Find image standard deviation | vips_deviate() | 
| divide | Divide two images | vips_divide() | 
| draw_circle | Draw a circle on an image | vips_draw_circle(),vips_draw_circle1() | 
| draw_flood | Flood-fill an area | vips_draw_flood(),vips_draw_flood1() | 
| draw_image | Paint an image into another image | vips_draw_image() | 
| draw_line | Draw a line on an image | vips_draw_line(),vips_draw_line1() | 
| draw_mask | Draw a mask on an image | vips_draw_mask(),vips_draw_mask1() | 
| draw_rect | Paint a rectangle on an image | vips_draw_rect(),vips_draw_rect1(),vips_draw_point(),vips_draw_point1() | 
| draw_smudge | Blur a rectangle on an image | vips_draw_smudge() | 
| dzsave | Save image to deepzoom file | vips_dzsave() | 
| dzsave_buffer | Save image to dz buffer | vips_dzsave_buffer() | 
| embed | Embed an image in a larger image | vips_embed() | 
| extract_area | Extract an area from an image | vips_extract_area(),vips_crop() | 
| extract_band | Extract band from an image | vips_extract_band() | 
| eye | Make an image showing the eye's spatial response | vips_eye() | 
| falsecolour | False-color an image | vips_falsecolour() | 
| fastcor | Fast correlation | vips_fastcor() | 
| fill_nearest | Fill image zeros with nearest non-zero pixel | vips_fill_nearest() | 
| find_trim | Search an image for non-edge areas | vips_find_trim() | 
| fitsload | Load a fits image | vips_fitsload() | 
| fitssave | Save image to fits file | vips_fitssave() | 
| flatten | Flatten alpha out of an image | vips_flatten() | 
| flip | Flip an image | vips_flip() | 
| float2rad | Transform float rgb to radiance coding | vips_float2rad() | 
| fractsurf | Make a fractal surface | vips_fractsurf() | 
| freqmult | Frequency-domain filtering | vips_freqmult() | 
| fwfft | Forward fft | vips_fwfft() | 
| gamma | Gamma an image | vips_gamma() | 
| gaussblur | Gaussian blur | vips_gaussblur() | 
| gaussmat | Make a gaussian image | vips_gaussmat() | 
| gaussnoise | Make a gaussnoise image | vips_gaussnoise() | 
| getpoint | Read a point from an image | vips_getpoint() | 
| gifload | Load gif with giflib | vips_gifload() | 
| gifload_buffer | Load gif with giflib | vips_gifload_buffer() | 
| globalbalance | Global balance an image mosaic | vips_globalbalance() | 
| gravity | Place an image within a larger image with a certain gravity | vips_gravity() | 
| grey | Make a grey ramp image | vips_grey() | 
| grid | Grid an image | vips_grid() | 
| heifload | Load a heif image | vips_heifload() | 
| heifload_buffer | Load a heif image | vips_heifload_buffer() | 
| heifsave | Save image in heif format | vips_heifsave() | 
| heifsave_buffer | Save image in heif format | vips_heifsave_buffer() | 
| hist_cum | Form cumulative histogram | vips_hist_cum() | 
| hist_entropy | Estimate image entropy | vips_hist_entropy() | 
| hist_equal | Histogram equalisation | vips_hist_equal() | 
| hist_find | Find image histogram | vips_hist_find() | 
| hist_find_indexed | Find indexed image histogram | vips_hist_find_indexed() | 
| hist_find_ndim | Find n-dimensional image histogram | vips_hist_find_ndim() | 
| hist_ismonotonic | Test for monotonicity | vips_hist_ismonotonic() | 
| hist_local | Local histogram equalisation | vips_hist_local() | 
| hist_match | Match two histograms | vips_hist_match() | 
| hist_norm | Normalise histogram | vips_hist_norm() | 
| hist_plot | Plot histogram | vips_hist_plot() | 
| hough_circle | Find hough circle transform | vips_hough_circle() | 
| hough_line | Find hough line transform | vips_hough_line() | 
| icc_export | Output to device with icc profile | vips_icc_export() | 
| icc_import | Import from device with icc profile | vips_icc_import() | 
| icc_transform | Transform between devices with icc profiles | vips_icc_transform() | 
| identity | Make a 1d image where pixel values are indexes | vips_identity() | 
| ifthenelse | Ifthenelse an image | vips_ifthenelse() | 
| insert | Insert image subintomainatx,y | vips_insert() | 
| invert | Invert an image | vips_invert() | 
| invertlut | Build an inverted look-up table | vips_invertlut() | 
| invfft | Inverse fft | vips_invfft() | 
| join | Join a pair of images | vips_join() | 
| jpegload | Load jpeg from file | vips_jpegload() | 
| jpegload_buffer | Load jpeg from buffer | vips_jpegload_buffer() | 
| jpegload_source | Load image from jpeg source | vips_jpegload_source() | 
| jpegsave | Save image to jpeg file | vips_jpegsave() | 
| jpegsave_buffer | Save image to jpeg buffer | vips_jpegsave_buffer() | 
| jpegsave_mime | Save image to jpeg mime | vips_jpegsave_mime() | 
| jpegsave_target | Save image to jpeg target | vips_jpegsave_target() | 
| labelregions | Label regions in an image | vips_labelregions() | 
| linear | Calculate (a * in + b) | vips_linear(),vips_linear1() | 
| linecache | Cache an image as a set of lines | vips_linecache() | 
| logmat | Make a laplacian of gaussian image | vips_logmat() | 
| magickload | Load file with imagemagick | vips_magickload() | 
| magickload_buffer | Load buffer with imagemagick | vips_magickload_buffer() | 
| magicksave | Save file with imagemagick | vips_magicksave() | 
| magicksave_buffer | Save image to magick buffer | vips_magicksave_buffer() | 
| mapim | Resample with a map image | vips_mapim() | 
| maplut | Map an image though a lut | vips_maplut() | 
| mask_butterworth | Make a butterworth filter | vips_mask_butterworth() | 
| mask_butterworth_band | Make a butterworth_band filter | vips_mask_butterworth_band() | 
| mask_butterworth_ring | Make a butterworth ring filter | vips_mask_butterworth_ring() | 
| mask_fractal | Make fractal filter | vips_mask_fractal() | 
| mask_gaussian | Make a gaussian filter | vips_mask_gaussian() | 
| mask_gaussian_band | Make a gaussian filter | vips_mask_gaussian_band() | 
| mask_gaussian_ring | Make a gaussian ring filter | vips_mask_gaussian_ring() | 
| mask_ideal | Make an ideal filter | vips_mask_ideal() | 
| mask_ideal_band | Make an ideal band filter | vips_mask_ideal_band() | 
| mask_ideal_ring | Make an ideal ring filter | vips_mask_ideal_ring() | 
| match | First-order match of two images | vips_match() | 
| math | Apply a math operation to an image | vips_math(),vips_sin(),vips_cos(),vips_tan(),vips_asin(),vips_acos(),vips_atan(),vips_exp(),vips_exp10(),vips_log(),vips_log10() | 
| math2 | Binary math operations | vips_math2(),vips_pow(),vips_wop() | 
| math2_const | Binary math operations with a constant | vips_math2_const(),vips_andimage_const(),vips_orimage_const(),vips_eorimage_const(),vips_lshift_const(),vips_rshift_const(),vips_math2_const1(),vips_andimage_const1(),vips_orimage_const1(),vips_eorimage_const1(),vips_lshift_const1(),vips_rshift_const1() | 
| matload | Load mat from file | vips_matload() | 
| matrixload | Load matrix from file | vips_matrixload() | 
| matrixprint | Print matrix | vips_matrixprint() | 
| matrixsave | Save image to matrix file | vips_matrixsave() | 
| max | Find image maximum | vips_max() | 
| measure | Measure a set of patches on a color chart | vips_measure() | 
| merge | Merge two images | vips_merge() | 
| min | Find image minimum | vips_min() | 
| morph | Morphology operation | vips_morph() | 
| mosaic | Mosaic two images | vips_mosaic() | 
| mosaic1 | First-order mosaic of two images | vips_mosaic1() | 
| msb | Pick most-significant byte from an image | vips_msb() | 
| multiply | Multiply two images | vips_multiply() | 
| niftiload | Load a nifti image | vips_niftiload() | 
| niftisave | Save image to nifti file | vips_niftisave() | 
| openexrload | Load an openexr image | vips_openexrload() | 
| openslideload | Load file with openslide | vips_openslideload() | 
| pdfload | Load pdf with libpoppler | vips_pdfload() | 
| pdfload_buffer | Load pdf with libpoppler | vips_pdfload_buffer() | 
| percent | Find threshold for percent of pixels | vips_percent() | 
| perlin | Make a perlin noise image | vips_perlin() | 
| phasecor | Calculate phase correlation | vips_phasecor() | 
| pngload | Load png from file | vips_pngload() | 
| pngload_buffer | Load png from buffer | vips_pngload_buffer() | 
| pngload_source | Load png from source | vips_pngload_source() | 
| pngsave | Save image to png file | vips_pngsave() | 
| pngsave_buffer | Save image to png buffer | vips_pngsave_buffer() | 
| pngsave_target | Save image to target as png | vips_pngsave_target() | 
| ppmload | Load ppm from file | vips_ppmload() | 
| ppmsave | Save image to ppm file | vips_ppmsave() | 
| premultiply | Premultiply image alpha | vips_premultiply() | 
| profile | Find image profiles | vips_profile() | 
| profile_load | Load named icc profile | vips_profile_load() | 
| project | Find image projections | vips_project() | 
| quadratic | Resample an image with a quadratic transform | vips_quadratic() | 
| rad2float | Unpack radiance coding to float rgb | vips_rad2float() | 
| radload | Load a radiance image from a file | vips_radload() | 
| radload_buffer | Load rad from buffer | vips_radload_buffer() | 
| radload_source | Load rad from source | vips_radload_source() | 
| radsave | Save image to radiance file | vips_radsave() | 
| radsave_buffer | Save image to radiance buffer | vips_radsave_buffer() | 
| radsave_target | Save image to radiance target | vips_radsave_target() | 
| rank | Rank filter | vips_rank(),vips_median() | 
| rawload | Load raw data from a file | vips_rawload() | 
| rawsave | Save image to raw file | vips_rawsave() | 
| rawsave_fd | Write raw image to file descriptor | vips_rawsave_fd() | 
| recomb | Linear recombination with matrix | vips_recomb() | 
| reduce | Reduce an image | vips_reduce() | 
| reduceh | Shrink an image horizontally | vips_reduceh() | 
| reducev | Shrink an image vertically | vips_reducev() | 
| relational | Relational operation on two images | vips_relational(),vips_equal(),vips_notequal(),vips_less(),vips_lesseq(),vips_more(),vips_moreeq() | 
| relational_const | Relational operations against a constant | vips_relational_const(),vips_equal_const(),vips_notequal_const(),vips_less_const(),vips_lesseq_const(),vips_more_const(),vips_moreeq_const(),vips_relational_const1(),vips_equal_const1(),vips_notequal_const1(),vips_less_const1(),vips_lesseq_const1(),vips_more_const1(),vips_moreeq_const1() | 
| remainder | Remainder after integer division of two images | vips_remainder() | 
| remainder_const | Remainder after integer division of an image and a constant | vips_remainder_const(),vips_remainder_const1() | 
| replicate | Replicate an image | vips_replicate() | 
| resize | Resize an image | vips_resize() | 
| rot | Rotate an image | vips_rot() | 
| rot45 | Rotate an image | vips_rot45() | 
| rotate | Rotate an image by a number of degrees | vips_rotate() | 
| round | Perform a round function on an image | vips_round(),vips_floor(),vips_ceil(),vips_rint() | 
| sRGB2HSV | Transform srgb to hsv | vips_sRGB2HSV() | 
| sRGB2scRGB | Convert an srgb image to scrgb | vips_sRGB2scRGB() | 
| scRGB2BW | Convert scrgb to bw | vips_scRGB2BW() | 
| scRGB2XYZ | Transform scrgb to xyz | vips_scRGB2XYZ() | 
| scRGB2sRGB | Convert an scrgb image to srgb | vips_scRGB2sRGB() | 
| scale | Scale an image to uchar | vips_scale() | 
| sequential | Check sequential access | vips_sequential() | 
| sharpen | Unsharp masking for print | vips_sharpen() | 
| shrink | Shrink an image | vips_shrink() | 
| shrinkh | Shrink an image horizontally | vips_shrinkh() | 
| shrinkv | Shrink an image vertically | vips_shrinkv() | 
| sign | Unit vector of pixel | vips_sign() | 
| similarity | Similarity transform of an image | vips_similarity() | 
| sines | Make a 2d sine wave | vips_sines() | 
| smartcrop | Extract an area from an image | vips_smartcrop() | 
| sobel | Sobel edge detector | vips_sobel() | 
| spcor | Spatial correlation | vips_spcor() | 
| spectrum | Make displayable power spectrum | vips_spectrum() | 
| stats | Find many image stats | vips_stats() | 
| stdif | Statistical difference | vips_stdif() | 
| subsample | Subsample an image | vips_subsample() | 
| subtract | Subtract two images | vips_subtract() | 
| sum | Sum an array of images | vips_sum() | 
| svgload | Load svg with rsvg | vips_svgload() | 
| svgload_buffer | Load svg with rsvg | vips_svgload_buffer() | 
| svgload_source | Load svg from source | vips_svgload_source() | 
| switch | Find the index of the first non-zero pixel in tests | vips_switch() | 
| system | Run an external command | vips_system() | 
| text | Make a text image | vips_text() | 
| thumbnail | Generate thumbnail from file | vips_thumbnail() | 
| thumbnail_buffer | Generate thumbnail from buffer | vips_thumbnail_buffer() | 
| thumbnail_image | Generate thumbnail from image | vips_thumbnail_image() | 
| thumbnail_source | Generate thumbnail from source | vips_thumbnail_source() | 
| tiffload | Load tiff from file | vips_tiffload() | 
| tiffload_buffer | Load tiff from buffer | vips_tiffload_buffer() | 
| tiffload_source | Load tiff from source | vips_tiffload_source() | 
| tiffsave | Save image to tiff file | vips_tiffsave() | 
| tiffsave_buffer | Save image to tiff buffer | vips_tiffsave_buffer() | 
| tilecache | Cache an image as a set of tiles | vips_tilecache() | 
| tonelut | Build a look-up table | vips_tonelut() | 
| transpose3d | Transpose3d an image | vips_transpose3d() | 
| unpremultiply | Unpremultiply image alpha | vips_unpremultiply() | 
| vipsload | Load vips from file | vips_vipsload() | 
| vipssave | Save image to vips file | vips_vipssave() | 
| webpload | Load webp from file | vips_webpload() | 
| webpload_buffer | Load webp from buffer | vips_webpload_buffer() | 
| webpload_source | Load webp from source | vips_webpload_source() | 
| webpsave | Save image to webp file | vips_webpsave() | 
| webpsave_buffer | Save image to webp buffer | vips_webpsave_buffer() | 
| webpsave_target | Save image to webp target | vips_webpsave_target() | 
| worley | Make a worley noise image | vips_worley() | 
| wrap | Wrap image origin | vips_wrap() | 
| xyz | Make an image where pixel values are coordinates | vips_xyz() | 
| zone | Make a zone plate | vips_zone() | 
| zoom | Zoom an image | vips_zoom() |