3 Library functions

im

• im_abs finds the absolute value or the magnitude of an image
• im_acostra basic trig functions
• im_add add two images
• im_add_close_callback add image callbacks
• im_add_eval_callback add image callbacks
• im_add_evalend_callback add image callbacks
• im_add_evalstart_callback add image callbacks
• im_add_invalidate_callback add image callbacks
• im_add_preclose_callback add image callbacks
• im_addgnoise add gaussian noise to an image
• im_affine apply an affine transform to an image
• im_affinei apply an affine transform to an image
• im_affinei_all apply an affine transform to an image
• im_allocate_input_array generate image pixels
• im_amiMSBfirst classify image types
• im_analyze2vips convert Analyze 7.5 images to VIPS format
• im_and_vec boolean operations on unsigned char images
• im_andconst boolean operations on unsigned char images
• im_andimage boolean operations on unsigned char images
• im_append_Hist copy most of an image descriptor to another image descriptor.
• IM_ARRAY memory allocation macros
• im_asintra basic trig functions
• im_atantra basic trig functions
• im_avg find the mean, standard deviation, minimum and maximum of an image
• im_BandFmt2char decode image descriptors
• im_bandjoin join two or more images
• im_bandmean average bands in an image
• im_benchmark do something complicated
• im_binfile wrap a raw binary file inside an IMAGE descriptor
• im_bits_of_fmt return number of bits of band format
• im_black make a black image
• im_blend use an unsigned char image to join two images together
• im_buildlut build a LUT from a set of x/y points
• im_c2amph conversion between image types
• im_c2imag conversion between image types
• im_c2ps conversion between image types
• im_c2real conversion between image types
• im_c2rect conversion between image types
• im_cache make image in the background
• im_ceil for each pixel, find the smallest integral value not less than
• im_char2BandFmt decode image descriptors
• im_char2Coding decode image descriptors
• im_char2Compression decode image descriptors
• im_char2Type decode image descriptors
• im_circle draws a circle within an image file
• im_clip conversion between image types
• im_clip2c conversion between image types
• im_clip2cm conversion between image types
• im_clip2d conversion between image types
• im_clip2dcm conversion between image types
• im_clip2f conversion between image types
• im_clip2fmt conversion between image types
• im_clip2i conversion between image types
• im_clip2s conversion between image types
• im_clip2ui conversion between image types
• im_clip2us conversion between image types
• im_close close an image descriptor
• im_cmulnorm multiply two images
• im_cntlines calculate transitions between black and white pels horizontally or vertically
• im_Coding2char decode image descriptors
• im_col_ab2Ch colour space conversion
• im_col_C2Cucs colour space conversion
• im_col_Ch2ab colour space conversion
• im_col_Ch2hucs colour space conversion
• im_col_Chucs2h colour space conversion
• im_col_Cucs2C colour space conversion
• im_col_dECMC colour space conversion
• im_col_display colour space conversion
• im_col_L2Lucs colour space conversion
• im_col_Lab2XYZ colour space conversion
• im_col_Lucs2L colour space conversion
• im_col_make_tables_RGB colour space conversion
• im_col_make_tables_UCS colour space conversion
• im_col_pythagoras colour space conversion
• im_col_rgb2XYZ colour space conversion
• im_col_XYZ2Lab colour space conversion
• im_col_XYZ2rgb colour space conversion
• im_compass extract features from an image with a rotating input mask
• im_Compression2char decode image descriptors
• im_concurrency_get set and get the number of threads to use for evaluation
• im_concurrency_set set and get the number of threads to use for evaluation
• im_contrast_surface Generate contrast surface
• im_contrast_surface_raw Generate contrast surface
• im_conv convolves an image with a generalised mask
• im_conv_raw convolves an image with a generalised mask
• im_convf convolves an image with a generalised mask
• im_convf_raw convolves an image with a generalised mask
• im_convsep convolves an image with a generalised mask
• im_convsep_raw convolves an image with a generalised mask
• im_convsepf convolves an image with a generalised mask
• im_convsepf_raw convolves an image with a generalised mask
• im_convsub convolves an image with a generalised mask
• im_cooc_asm calculate the co-occurrence matrix and features on it
• im_cooc_contrast calculate the co-occurrence matrix and features on it
• im_cooc_correlation calculate the co-occurrence matrix and features on it
• im_cooc_entropy calculate the co-occurrence matrix and features on it
• im_cooc_matrix calculate the co-occurrence matrix and features on it
• im_copy copy an image
• im_copy_from copy an image
• im_copy_morph copy an image
• im_copy_set copy an image
• im_copy_set_meta copy an image
• im_copy_swap copy an image
• im_correl search for image match
• im_costra basic trig functions
• im_cp_desc copy most of an image descriptor to another image descriptor.
• im_cp_desc_array copy most of an image descriptor to another image descriptor.
• im_cp_descv copy most of an image descriptor to another image descriptor.
• im_create_dmask operations on double or int masks
• im_create_fmask create a frequency domain filter mask according to args
• im_create_imask operations on double or int masks
• im_csv2vips read and write CSV (comma separated values) files
• im_csv2vips_header read and write CSV (comma separated values) files
• im_dE00_fromLab calculate colour differences
• im_dE_fromdisp derived colour difference functions
• im_dE_fromLab calculate colour differences
• im_dE_fromXYZ derived colour difference functions
• im_debugim print raw image data pointed by an image descriptor
• im_dECMC_fromdisp derived colour difference functions
• im_dECMC_fromLab calculate colour differences
• im_demand_hint hint on demand style for im_generate(3)
• im_demand_hint_array hint on demand style for im_generate(3)
• im_deviate find the mean, standard deviation, minimum and maximum of an image
• im_diag handle error messages from VIPS
• im_dif_std calculate the mean and the standard deviation of the difference image for a given displacement vector
• im_dilate perform morphological operations on a white object against a black background
• im_dilate_raw perform morphological operations on a white object against a black background
• im_disp2Lab derived colour space conversion functions
• im_disp2XYZ convert images between various colour spaces
• im_disp_ps creates a displayable power spectrum of an one band image
• im_divide divide two images
• im_dup_dmask operations on double or int masks
• im_dup_imask operations on double or int masks
• im_embed extract a portion of an image
• im_eor_vec boolean operations on unsigned char images
• im_eorconst boolean operations on unsigned char images
• im_eorimage boolean operations on unsigned char images
• im_equal relational tests on images.
• im_equal_vec relational tests on images.
• im_equalconst relational tests on images.
• im_erode perform morphological operations on a white object against a black background
• im_erode_raw perform morphological operations on a white object against a black background
• im_error handle error messages from VIPS
• im_error_buffer handle error messages from VIPS
• im_error_clear handle error messages from VIPS
• im_exp10tra logarithmic, exponential and power transform of an image
• im_expntra logarithmic, exponential and power transform of an image
• im_expntra_vec logarithmic, exponential and power transform of an image
• im_exptra logarithmic, exponential and power transform of an image
• im_exr2vips convert OpenEXR images to VIPS format
• im_exr2vips_header convert OpenEXR images to VIPS format
• im_extract extract a portion of an image
• im_extract_area extract a portion of an image
• im_extract_areabands extract a portion of an image
• im_extract_band extract a portion of an image
• im_extract_bands extract a portion of an image
• im_eye creates a pattern which shows the spatial response of the human visual system
• im_falsecolour colour a mono image
• im_fastcor correlate two images
• im_fastline suck pels up, and paint them down somewhere else
• im_fastlineuser suck pels up, and paint them down somewhere else
• im_fav4 averages four frames
• im_feye creates a pattern which shows the spatial response of the human visual system
• im_fgrey creates a grey scale
• im_fliphor rotate and flip an image
• im_flipver rotate and flip an image
• im_float2rad convert RAD coded images to float and back
• im_flood flood a area
• im_flood_blob flood a area
• im_floor for each pixel, find the largest integral value not greater than
• im_flt_imag_freq filter a square image in the frequency domain
• im_fractsurf creates a fractal surface
• im_free add image callbacks
• im_free_dmask operations on double or int masks
• im_free_imask operations on double or int masks
• im_freqflt filters an image with a float filter mask in the frequency domain
• im_fwfft forward and inverse fft on an image
• im_fzone creates a zone plate
• im_gadd add two images
• im_gaddim add two images
• im_gammacorrect carry out gamma correction
• im_gauss_dmask create a gaussian DOUBLEMASK or INTMASK
• im_gauss_imask create a gaussian DOUBLEMASK or INTMASK
• im_gauss_imask_sep create a gaussian DOUBLEMASK or INTMASK
• im_gaussnoise creates a gaussian noisy picture
• im_gbandjoin join two or more images
• im_generate generate image pixels
• im_get_option_group start up VIPS
• im_gfadd add two images
• im_glds_asm relational tests on images.
• im_glds_contrast relational tests on images.
• im_glds_entropy relational tests on images.
• im_glds_matrix calculate the spatial grey level difference matrix and features on it
• im_glds_mean relational tests on images.
• im_global_balance perform global mosaic balancing on an image
• im_global_balance_float perform global mosaic balancing on an image
• im_grad_x find horizontal or vertical differences
• im_grad_y find horizontal or vertical differences
• im_gradcor correlate two images
• im_gradient extract features from an image with a rotating input mask
• im_grey creates a grey scale
• im_grid split a vertical image into a grid of smaller images
• im_guess_libdir try to guess install directory
• im_guess_prefix try to guess install directory
• im_header read fields from the image header
• im_header_double read fields from the image header
• im_header_get read fields from the image header
• im_header_get_type read fields from the image header
• im_header_int read fields from the image header
• im_header_map read fields from the image header
• im_header_string read fields from the image header
• im_heq process an image using grey level transformations
• im_hist create a displayable histogram from an image
• im_histcum create, display and process histograms or luts
• im_histeq create, display and process histograms or luts
• im_histgr create, display and process histograms or luts
• im_histlin manage image history
• im_histnD create, display and process histograms or luts
• im_histnorm create, display and process histograms or luts
• im_history_get manage image history
• im_histplot graph an image of one horizontal or vertical line
• im_histspec create, display and process histograms or luts
• im_hsp process an image using grey level transformations
• im_icc_ac2rc transform images using ICC profiles
• im_icc_export transform images using ICC profiles
• im_icc_export_depth transform images using ICC profiles
• im_icc_import transform images using ICC profiles
• im_icc_import_embedded transform images using ICC profiles
• im_icc_present transform images using ICC profiles
• im_icc_transform transform images using ICC profiles
• im_identity create, display and process histograms or luts
• im_identity_ushort create, display and process histograms or luts
• im_ifthenelse use an unsigned char image to join two images together
• im_image wrap a raw binary file inside an IMAGE descriptor
• IM_IMAGE_ADDR macros for images
• IM_IMAGE_N_ELEMENTS macros for images
• im_image_sanity check image descriptors for sanity
• IM_IMAGE_SIZEOF_ELEMENT macros for images
• IM_IMAGE_SIZEOF_LINE macros for images
• IM_IMAGE_SIZEOF_PEL macros for images
• im_incheck checks image descriptors for WIO
• im_init make an IMAGE descriptor
• im_init_world start up VIPS
• im_initdesc initialises an image descriptor to specific values
• im_insert insert one image into another
• im_insertplace paste small images into big images
• im_invalidate flush caches related to an image
• im_invert inverts an image pointed by an image descriptor.
• im_invertlut turn a set of greyscale measurements into a gamma-correcting LUT
• im_invfft forward and inverse fft on an image
• im_invfftr forward and inverse fft on an image
• im_iocheck checks image descriptors for WIO
• im_iscomplex classify image types
• im_isfile classify image types
• im_isfloat classify image types
• im_isint classify image types
• im_isjpeg classify image types
• im_isMSBfirst classify image types
• im_ispartial classify image types
• im_ispng classify image types
• im_isppm classify image types
• im_isscalar classify image types
• im_istiff classify image types
• im_istifftiled classify image types
• im_isuint classify image types
• im_isvips classify image types
• im_iterate PIO input from image
• im_jpeg2vips convert JPEG images to and from VIPS format
• im_jpeg2vips_header convert JPEG images to and from VIPS format
• im_Lab2disp derived colour space conversion functions
• im_Lab2LabQ pack and unpack LABPACK images.
• im_Lab2LabS pack and unpack LABPACK images.
• im_Lab2LCh convert images between various colour spaces
• im_Lab2UCS derived colour space conversion functions
• im_Lab2XYZ convert images between various colour spaces
• im_lab_morph calculate colour differences
• im_LabQ2disp convert LabQ to display rgb quickly and badly
• im_LabQ2disp_build_table convert LabQ to display rgb quickly and badly
• im_LabQ2disp_table convert LabQ to display rgb quickly and badly
• im_LabQ2Lab pack and unpack LABPACK images.
• im_LabQ2LabS pack and unpack LABPACK images.
• im_LabQ2XYZ derived colour space conversion functions
• im_LabS2Lab pack and unpack LABPACK images.
• im_LabS2LabQ pack and unpack LABPACK images.
• im_LCh2Lab convert images between various colour spaces
• im_LCh2UCS convert images between various colour spaces
• im_less relational tests on images.
• im_less_vec relational tests on images.
• im_lessconst relational tests on images.
• im_lesseq relational tests on images.
• im_lesseq_vec relational tests on images.
• im_lesseqconst relational tests on images.
• im_lhisteq process an image using grey level transformations
• im_lhisteq_raw process an image using grey level transformations
• im_lindetect extract features from an image with a rotating input mask
• im_line writes a line on a vasari image
• im_lineset suck pels up, and paint them down somewhere else
• im_lintra performs a linear transformation on an image
• im_lintra_vec performs a linear transformation on an image
• im_list_add linked list functions
• im_list_append linked list functions
• im_list_eq linked list functions
• im_list_fix linked list functions
• im_list_fold linked list functions
• im_list_free linked list functions
• im_list_index linked list functions
• im_list_insert linked list functions
• im_list_len linked list functions
• im_list_map linked list functions
• im_list_map_rev linked list functions
• im_list_member linked list functions
• im_list_pos linked list functions
• im_list_remove linked list functions
• im_litecor perform light correction
• im_log10tra logarithmic, exponential and power transform of an image
• im_log_dmask create a laplacian of gaussian (log) DOUBLEMASK or INTMASK
• im_log_imask create a laplacian of gaussian (log) DOUBLEMASK or INTMASK
• im_logtra logarithmic, exponential and power transform of an image
• im_lowpass remove high frequencies quickly
• im_lrjoin join two images into one
• im_lrmerge merges two images with a given dx and dy
• im_lrmosaic mosaic two images using a zero order procedure
• im_lu_decomp Solve SLEs by LU decomposition
• im_lu_solve Solve SLEs by LU decomposition
• IM_MACROS misc math macros
• im_magick2vips read images with the libMagick library
• im_magick2vips_header read images with the libMagick library
• im_make_xy creates a grey scale
• im_makerw make an IMAGE writeable
• im_malloc add image callbacks
• im_maplut map an image through a lookup table
• im_mask2vips convert between masks and images
• im_matcat matrix operations on DOUBLEMASKs
• im_match_linear resample to make a match
• im_match_linear_search resample to make a match
• im_matinv matrix operations on DOUBLEMASKs
• im_matinv_inplace matrix operations on DOUBLEMASKs
• im_matmul matrix operations on DOUBLEMASKs
• im_mattrn matrix operations on DOUBLEMASKs
• IM_MAX misc math macros
• im_max find the mean, standard deviation, minimum and maximum of an image
• im_maxpos find the mean, standard deviation, minimum and maximum of an image
• im_maxpos_vec Find highest or lowest pixel values
• im_maxvalue extract features from an image with a rotating input mask
• im_mean_std_double_buffer calculates the mean and the std of data held by a by an int or double buffer
• im_mean_std_int_buffer calculates the mean and the std of data held by a by an int or double buffer
• im_measure measure colour patches off images
• im_meta read and write extra header fields
• im_meta_get read and write extra header fields
• im_meta_get_area read and write extra header fields
• im_meta_get_blob read and write extra header fields
• im_meta_get_double read and write extra header fields
• im_meta_get_int read and write extra header fields
• im_meta_get_string read and write extra header fields
• im_meta_get_type read and write extra header fields
• im_meta_set read and write extra header fields
• im_meta_set_area read and write extra header fields
• im_meta_set_blob read and write extra header fields
• im_meta_set_double read and write extra header fields
• im_meta_set_int read and write extra header fields
• im_meta_set_string read and write extra header fields
• IM_MIN misc math macros
• im_min find the mean, standard deviation, minimum and maximum of an image
• im_minpos find the mean, standard deviation, minimum and maximum of an image
• im_minpos_vec Find highest or lowest pixel values
• im_mmapin memory maps a VASARI image file (read only) and returns an image descriptor.
• im_mmapinrw memory maps a VASARI image file with read and write access
• im_more relational tests on images.
• im_more_vec relational tests on images.
• im_moreconst relational tests on images.
• im_moreeq relational tests on images.
• im_moreeq_vec relational tests on images.
• im_moreeqconst relational tests on images.
• im_mpercent find threshold corresponding to a percentage of an image values
• im_msb Convert to uchar by discarding bits
• im_msb_band Convert to uchar by discarding bits
• im_multiply multiply two images
• IM_NEW memory allocation macros
• im_norm_dmask operations on double or int masks
• im_notequal relational tests on images.
• im_notequal_vec relational tests on images.
• im_notequalconst relational tests on images.
• IM_NUMBER memory allocation macros
• im_offsets45 rotate square masks
• im_offsets90 rotate square masks
• im_open open VIPS image descriptor(s)
• im_open_local open VIPS image descriptor(s)
• im_open_local_array open VIPS image descriptor(s)
• im_openout sets an image descriptor corresponding to an output file
• im_or_vec boolean operations on unsigned char images
• im_orconst boolean operations on unsigned char images
• im_orimage boolean operations on unsigned char images
• im_outcheck checks image descriptors for WIO
• im_paintrect suck pels up, and paint them down somewhere else
• im_partial makes a PIO intermediate image
• im_pincheck checks image descriptors for PIO
• im_piocheck checks image descriptors for PIO
• im_plotmask suck pels up, and paint them down somewhere else
• im_plotpoint suck pels up, and paint them down somewhere else
• im_png2vips convert PNG images to and from VIPS format
• im_png2vips_header convert PNG images to and from VIPS format
• im_poutcheck checks image descriptors for PIO
• im_powtra logarithmic, exponential and power transform of an image
• im_powtra_vec logarithmic, exponential and power transform of an image
• im_ppm2vips convert PPM/PGM/PBM images to and from VIPS format
• im_ppm2vips_header convert PPM/PGM/PBM images to and from VIPS format
• im_prepare fill region with data
• im_prepare_many fill region with data
• im_prepare_to fill region with data
• im_print print a string to stdout
• im_print_dmask operations on double or int masks
• im_print_imask operations on double or int masks
• im_printdesc decode image descriptors
• im_printhd prints the header of a Vasari format image file.
• im_printlines print raw image data pointed by an image descriptor
• im_profile calculate transitions between black and white pels horizontally or vertically
• im_project find horizontal and vertical projections
• im_quantim quantise an image or a lut
• im_quantlut quantise an image or a lut
• im_rad2float convert RAD coded images to float and back
• im_rank rank filter
• im_rank_image extract features from an image with a rotating input mask
• im_raw2vips wrap a raw binary file inside an IMAGE descriptor
• im_read_dmask operations on double or int masks
• im_read_imask operations on double or int masks
• im_readpoint suck pels up, and paint them down somewhere else
• im_recomb matrix recombination of image
• IM_RECT_BOTTOM rectangle algebra functions
• im_rect_dup rectangle algebra functions
• im_rect_equalsrect rectangle algebra functions
• IM_RECT_HCENTRE rectangle algebra functions
• im_rect_includespoint rectangle algebra functions
• im_rect_includesrect rectangle algebra functions
• im_rect_intersectrect rectangle algebra functions
• im_rect_isempty rectangle algebra functions
• im_rect_marginadjust rectangle algebra functions
• im_rect_normalise rectangle algebra functions
• IM_RECT_RIGHT rectangle algebra functions
• im_rect_unionrect rectangle algebra functions
• IM_RECT_VCENTRE rectangle algebra functions
• IM_REGION_ADDR macros for regions
• im_region_buffer attach data to region
• im_region_create region creation and destruction
• im_region_free region creation and destruction
• im_region_image attach data to region
• im_region_local attach data to region
• IM_REGION_LSKIP macros for regions
• IM_REGION_N_ELEMENTS macros for regions
• im_region_position attach data to region
• im_region_region attach data to region
• IM_REGION_SIZEOF_LINE macros for regions
• im_remainder remainder after integer division
• im_remainderconst remainder after integer division
• im_remainderconst_vec remainder after integer division
• im_remosaic rebuild a mosaic, substituting filenames
• im_render make image in the background
• im_render_fade make image in the background
• im_replicate replicate an image horizontally and vertically
• im_resize_linear shrink an image
• im_ri2c conversion between image types
• im_rightshift_size Decrease size by a power-of-two factor
• IM_RINT misc math macros
• im_rint for each pixel, find the nearest integral value
• im_rot180 rotate and flip an image
• im_rot270 rotate and flip an image
• im_rot90 rotate and flip an image
• im_rotate_dmask45 rotate square masks
• im_rotate_dmask90 rotate square masks
• im_rotate_imask45 rotate square masks
• im_rotate_imask90 rotate square masks
• im_rotquad rotates the four quadrants of an image
• im_scale scale an image to unsigned char image
• im_scale_dmask operations on double or int masks
• im_scaleps scale an image to unsigned char image
• im_setbuf sets an image descriptor to keep an image in ram
• im_setupout set up an image descriptor for WIO output
• im_sharpen simple coring edge enhancement
• im_shiftleft bit shift operations
• im_shiftright bit shift operations
• im_shrink shrink an image
• im_sign find the unit vector in the direction of value
• im_simcontr shows the effect of simultaneous contrast
• im_similarity apply a similarity transform to an image
• im_similarity_area apply a similarity transform to an image
• im_sines creates a spatial sine wave form
• im_sintra basic trig functions
• im_slice threshold an image
• im_smear filter and smudge in place
• im_smudge filter and smudge in place
• im_spatres quantise an image or a lut
• im_spcor correlate two images
• im_sRGB2XYZ convert images between various colour spaces
• im_start_many generate image pixels
• im_start_one generate image pixels
• im_stats calculate many image statistics in a single pass
• im_stdif statistical differentiation of an image
• im_stop_many generate image pixels
• im_stop_one generate image pixels
• im_stretch3 stretch horizontally by 3%, displace sub-pixel mask
• im_subsample subsample image by integer factor