VIPS function list 3 VIPS Library Using 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. 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() gravity expand an image with a specified gravity vips_gravity() flip flip an image vips_flip() insert insert image @sub into @main at @x, @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() smartcrop extract an area from an image vips_smartcrop() find_trim search an image for non-background pixels vips_find_trim() 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() composite composite a set of images with a PDF blend mode vips_composite() 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() worley make a worley noise image vips_worley() perlin make a perlin noise image vips_perlin() 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() dzsave_buffer save image to dz buffer vips_dzsave_buffer() 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() tiffsave_buffer save image to tiff buffer vips_tiffsave_buffer() 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() 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() 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() scRGB2BW convert scRGB to BW vips_scRGB2BW() 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() conva approximate integer convolution vips_conva() convf float convolution operation vips_convf() convi int convolution operation vips_convi() compass convolve with rotating mask vips_compass() convsep seperable convolution operation vips_convsep() convasep approximate separable integer convolution vips_convasep() 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: dilate, erode, hitmiss 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() fill_nearest replace each zero pixel with the nearest non-zero pixel vips_fill_nearest() 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()