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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 | 
|---|---|---|
| system | run an external command | vips_system() | 
| add | add two images | vips_add() | 
| subtract | subtract two images | vips_subtract() | 
| multiply | multiply two images | vips_multiply() | 
| divide | divide two images | vips_divide() | 
| relational | relational operation on two images | vips_relational(),vips_equal(),vips_notequal(),vips_less(),vips_lesseq(),vips_more(),vips_moreeq() | 
| remainder | remainder after integer division of two images | vips_remainder() | 
| boolean | boolean operation on two images | vips_boolean(),vips_andimage(),vips_orimage(),vips_eorimage(),vips_lshift(),vips_rshift() | 
| math2 | binary math operations | vips_math2(),vips_pow(),vips_wop() | 
| complex2 | complex binary operations on two images | vips_complex2(),vips_cross_phase() | 
| complexform | form a complex image from two real images | vips_complexform() | 
| sum | sum an array of images | vips_sum() | 
| invert | invert an image | vips_invert() | 
| linear | calculate (a * in + b) | vips_linear(),vips_linear1() | 
| 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() | 
| abs | absolute value of an image | vips_abs() | 
| sign | unit vector of pixel | vips_sign() | 
| round | perform a round function on an image | vips_round(),vips_floor(),vips_ceil(),vips_rint() | 
| 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_const | remainder after integer division of an image and a constant | vips_remainder_const(),vips_remainder_const1() | 
| 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() | 
| math2_const | pow( in,c) | vips_math2_const(),vips_pow_const(),vips_wop_const(),vips_math2_const1(),vips_pow_const1(),vips_wop_const1() | 
| complex | perform a complex operation on an image | vips_complex(),vips_polar(),vips_rect(),vips_conj() | 
| complexget | get a component from a complex image | vips_complexget(),vips_real(),vips_imag() | 
| avg | find image average | vips_avg() | 
| min | find image minimum | vips_min() | 
| max | find image maximum | vips_max() | 
| deviate | find image standard deviation | vips_deviate() | 
| stats | find image average | vips_stats() | 
| hist_find | find image histogram | vips_hist_find() | 
| hist_find_ndim | find n-dimensional image histogram | vips_hist_find_ndim() | 
| hist_find_indexed | find indexed image histogram | vips_hist_find_indexed() | 
| hough_line | find hough line transform | vips_hough_line() | 
| hough_circle | find hough circle transform | vips_hough_circle() | 
| project | find image projections | vips_project() | 
| profile | find image profiles | vips_profile() | 
| measure | measure a set of patches on a color chart | vips_measure() | 
| getpoint | read a point from an image | vips_getpoint() | 
| copy | copy an image | vips_copy() | 
| tilecache | cache an image as a set of tiles | vips_tilecache() | 
| linecache | cache an image as a set of lines | vips_linecache() | 
| sequential | check sequential access | vips_sequential() | 
| cache | cache an image | vips_cache() | 
| embed | embed an image in a larger image | vips_embed() | 
| flip | flip an image | vips_flip() | 
| insert | insert image subintomainatx,y | vips_insert() | 
| join | join a pair of images | vips_join() | 
| arrayjoin | join an array of images | vips_arrayjoin() | 
| extract_area | extract an area from an image | vips_extract_area(),vips_crop() | 
| extract_band | extract band from an image | vips_extract_band() | 
| 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() | 
| bandrank | band-wise rank of a set of images | vips_bandrank() | 
| bandmean | band-wise average | vips_bandmean() | 
| bandbool | boolean operation across image bands | vips_bandbool(),vips_bandand(),vips_bandor(),vips_bandeor(),vips_bandmean() | 
| replicate | replicate an image | vips_replicate() | 
| cast | cast an image | vips_cast(),vips_cast_uchar(),vips_cast_char(),vips_cast_ushort(),vips_cast_short(),vips_cast_uint(),vips_cast_int(),vips_cast_float(),vips_cast_double(),vips_cast_complex(),vips_cast_dpcomplex() | 
| rot | rotate an image | vips_rot() | 
| rot45 | rotate an image | vips_rot45() | 
| autorot | autorotate image by exif tag | vips_autorot() | 
| ifthenelse | ifthenelse an image | vips_ifthenelse() | 
| recomb | linear recombination with matrix | vips_recomb() | 
| bandfold | fold up x axis into bands | vips_bandfold() | 
| bandunfold | unfold image bands into x axis | vips_bandunfold() | 
| flatten | flatten alpha out of an image | vips_flatten() | 
| premultiply | premultiply image alpha | vips_premultiply() | 
| unpremultiply | unpremultiply image alpha | vips_unpremultiply() | 
| grid | grid an image | vips_grid() | 
| scale | scale an image to uchar | vips_scale() | 
| wrap | wrap image origin | vips_wrap() | 
| zoom | zoom an image | vips_zoom() | 
| subsample | subsample an image | vips_subsample() | 
| msb | pick most-significant byte from an image | vips_msb() | 
| byteswap | byteswap an image | vips_byteswap() | 
| falsecolour | false colour an image | vips_falsecolour() | 
| gamma | gamma an image | vips_gamma() | 
| black | make a black image | vips_black() | 
| gaussnoise | make a gaussnoise image | vips_gaussnoise() | 
| text | make a text image | vips_text() | 
| xyz | make an image where pixel values are coordinates | vips_xyz() | 
| gaussmat | make a gaussian image | vips_gaussmat() | 
| logmat | make a laplacian of gaussian image | vips_logmat() | 
| eye | make an image showing the eye's spatial response | vips_eye() | 
| grey | make a grey ramp image | vips_grey() | 
| zone | make a zone plate | vips_zone() | 
| sines | make a 2D sine wave | vips_sines() | 
| mask_ideal | make an ideal filter | vips_mask_ideal() | 
| mask_ideal_ring | make an ideal ring filter | vips_mask_ideal_ring() | 
| mask_ideal_band | make an ideal band filter | vips_mask_ideal_band() | 
| mask_butterworth | make a butterworth filter | vips_mask_butterworth() | 
| mask_butterworth_ring | make a butterworth ring filter | vips_mask_butterworth_ring() | 
| mask_butterworth_band | make a butterworth_band filter | vips_mask_butterworth_band() | 
| mask_gaussian | make a gaussian filter | vips_mask_gaussian() | 
| mask_gaussian_ring | make a gaussian ring filter | vips_mask_gaussian_ring() | 
| mask_gaussian_band | make a gaussian filter | vips_mask_gaussian_band() | 
| mask_fractal | make fractal filter | vips_mask_fractal() | 
| buildlut | build a look-up table | vips_buildlut() | 
| invertlut | build an inverted look-up table | vips_invertlut() | 
| tonelut | build a look-up table | vips_tonelut() | 
| identity | make a 1D image where pixel values are indexes | vips_identity() | 
| fractsurf | make a fractal surface | vips_fractsurf() | 
| radload | load a Radiance image from a file | vips_radload() | 
| pdfload | load PDF with libpoppler | vips_pdfload() | 
| pdfload_buffer | load PDF with libpoppler | vips_pdfload_buffer() | 
| svgload | load SVG with rsvg | vips_svgload() | 
| svgload_buffer | load SVG with rsvg | vips_svgload_buffer() | 
| gifload | load GIF with giflib | vips_gifload() | 
| gifload_buffer | load GIF with giflib | vips_gifload_buffer() | 
| ppmload | load ppm from file | vips_ppmload() | 
| csvload | load csv from file | vips_csvload() | 
| matrixload | load matrix from file | vips_matrixload() | 
| analyzeload | load an Analyze6 image | vips_analyzeload() | 
| rawload | load raw data from a file | vips_rawload() | 
| pngload | load png from file | vips_pngload() | 
| pngload_buffer | load png from buffer | vips_pngload_buffer() | 
| matload | load mat from file | vips_matload() | 
| jpegload | load jpeg from file | vips_jpegload() | 
| jpegload_buffer | load jpeg from buffer | vips_jpegload_buffer() | 
| webpload | load webp from file | vips_webpload() | 
| webpload_buffer | load webp from buffer | vips_webpload_buffer() | 
| tiffload | load tiff from file | vips_tiffload() | 
| tiffload_buffer | load tiff from buffer | vips_tiffload_buffer() | 
| openslideload | load file with OpenSlide | vips_openslideload() | 
| magickload | load file with ImageMagick | vips_magickload() | 
| magickload_buffer | load image from buffer with ImageMagick | vips_magickload_buffer() | 
| fitsload | load a FITS image | vips_fitsload() | 
| openexrload | load an OpenEXR image | vips_openexrload() | 
| radsave | save image to Radiance file | vips_radsave() | 
| ppmsave | save image to ppm file | vips_ppmsave() | 
| csvsave | save image to csv file | vips_csvsave() | 
| matrixsave | save image to matrix file | vips_matrixsave() | 
| matrixprint | print matrix | vips_matrixprint() | 
| rawsave | save image to raw file | vips_rawsave() | 
| rawsave_fd | write raw image to file descriptor | vips_rawsave_fd() | 
| dzsave | save image to deep zoom format | vips_dzsave() | 
| pngsave | save image to png file | vips_pngsave() | 
| pngsave_buffer | save image to png buffer | vips_pngsave_buffer() | 
| 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() | 
| webpsave | save image to webp file | vips_webpsave() | 
| webpsave_buffer | save image to webp buffer | vips_webpsave_buffer() | 
| tiffsave | save image to tiff file | vips_tiffsave() | 
| fitssave | save image to fits file | vips_fitssave() | 
| shrink | shrink an image | vips_shrink() | 
| shrinkh | shrink an image horizontally | vips_shrinkh() | 
| shrinkv | shrink an image vertically | vips_shrinkv() | 
| reduceh | shrink an image horizontally | vips_reduceh() | 
| reducev | shrink an image vertically | vips_reducev() | 
| reduce | reduce an image | vips_reduce() | 
| mapim | resample an image with an arbitrary warp | vips_mapim() | 
| affine | affine transform of an image | vips_affine() | 
| similarity | similarity transform of an image | vips_similarity() | 
| resize | resize an image | vips_resize() | 
| colourspace | convert to a new colourspace | vips_colourspace() | 
| Lab2XYZ | transform CIELAB to XYZ | vips_Lab2XYZ() | 
| XYZ2Lab | transform XYZ to Lab | vips_XYZ2Lab() | 
| Lab2LCh | transform Lab to LCh | vips_Lab2LCh() | 
| LCh2Lab | transform LCh to Lab | vips_LCh2Lab() | 
| LCh2CMC | transform LCh to CMC | vips_LCh2CMC() | 
| CMC2LCh | transform LCh to CMC | vips_CMC2LCh() | 
| XYZ2Yxy | transform XYZ to Yxy | vips_XYZ2Yxy() | 
| Yxy2XYZ | transform Yxy to XYZ | vips_Yxy2XYZ() | 
| scRGB2XYZ | transform scRGB to XYZ | vips_scRGB2XYZ() | 
| XYZ2scRGB | transform XYZ to scRGB | vips_XYZ2scRGB() | 
| LabQ2Lab | unpack a LabQ image to float Lab | vips_LabQ2Lab() | 
| Lab2LabQ | transform float Lab to LabQ coding | vips_Lab2LabQ() | 
| LabQ2LabS | unpack a LabQ image to short Lab | vips_LabQ2LabS() | 
| LabS2LabQ | transform short Lab to LabQ coding | vips_LabS2LabQ() | 
| LabS2Lab | transform signed short Lab to float | vips_LabS2Lab() | 
| Lab2LabS | transform float Lab to signed short | vips_Lab2LabS() | 
| rad2float | unpack Radiance coding to float RGB | vips_rad2float() | 
| float2rad | transform float RGB to Radiance coding | vips_float2rad() | 
| LabQ2sRGB | unpack a LabQ image to short Lab | vips_LabQ2sRGB() | 
| sRGB2HSV | transform sRGB to HSV | vips_sRGB2HSV() | 
| HSV2sRGB | transform HSV to sRGB | vips_HSV2sRGB() | 
| sRGB2scRGB | convert an sRGB image to scRGB | vips_sRGB2scRGB() | 
| scRGB2sRGB | convert an scRGB image to sRGB | vips_scRGB2sRGB() | 
| icc_import | import from device with ICC profile | vips_icc_import() | 
| icc_export | output to device with ICC profile | vips_icc_export() | 
| icc_transform | transform between devices with ICC profiles | vips_icc_transform() | 
| dE76 | calculate dE76 | vips_dE76() | 
| dE00 | calculate dE00 | vips_dE00() | 
| dECMC | calculate dECMC | vips_dECMC() | 
| maplut | map an image though a lut | vips_maplut() | 
| percent | find threshold for percent of pixels | vips_percent() | 
| stdif | statistical difference | vips_stdif() | 
| hist_cum | form cumulative histogram | vips_hist_cum() | 
| hist_match | match two histograms | vips_hist_match() | 
| hist_norm | normalise histogram | vips_hist_norm() | 
| hist_equal | histogram equalisation | vips_hist_equal() | 
| hist_plot | plot histogram | vips_hist_plot() | 
| hist_local | local histogram equalisation | vips_hist_local() | 
| hist_ismonotonic | test for monotonicity | vips_hist_ismonotonic() | 
| hist_entropy | estimate image entropy | vips_hist_entropy() | 
| conv | convolution operation | vips_conv() | 
| compass | convolve with rotating mask | vips_compass() | 
| convsep | seperable convolution operation | vips_convsep() | 
| fastcor | fast correlation | vips_fastcor() | 
| spcor | spatial correlation | vips_spcor() | 
| sharpen | unsharp masking for print | vips_sharpen() | 
| gaussblur | gaussian blur | vips_gaussblur() | 
| fwfft | forward FFT | vips_fwfft() | 
| invfft | inverse FFT | vips_invfft() | 
| freqmult | frequency-domain filtering | vips_freqmult() | 
| spectrum | make displayable power spectrum | vips_spectrum() | 
| phasecor | calculate phase correlation | vips_phasecor() | 
| morph | morphology operation | vips_morph() | 
| rank | rank filter | vips_rank(),vips_median() | 
| countlines | count lines in an image | vips_countlines() | 
| labelregions | label regions in an image | vips_labelregions() | 
| draw_rect | paint a rectangle on an image | vips_draw_rect(),vips_draw_rect1(),vips_draw_point(),vips_draw_point1() | 
| draw_mask | draw a mask on an image | vips_draw_mask(),vips_draw_mask1() | 
| draw_line | draw a line on an image | vips_draw_line(),vips_draw_line1() | 
| 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_smudge | blur a rectangle on an image | vips_draw_smudge() | 
| merge | merge two images | vips_merge() | 
| mosaic | mosaic two images | vips_mosaic() | 
| mosaic1 | first-order mosaic of two images | vips_mosaic1() | 
| match | first-order match of two images | vips_match() | 
| globalbalance | global balance an image mosaic | vips_globalbalance() |