src Directory Reference

Directory dependency graph for src/:

Files
file	adaptmap.c [code]
	local adaptive grayscale quantization; mostly gray-to-gray in preparation
file	affine.c [code]
	3-pt affine transforms on images and coordinates, with sampling and interpolation; gauss-jordan solver
file	affinecompose.c [code]
	Composable affine coordinate transforms.
file	allheaders.h [code]
	Includes all required Leptonica header files.
file	alltypes.h [code]
	Includes all required Leptonica type related header files.
file	arithlow.c [code]
	Low-level implementation of grayscale image arithmetic.
file	array.h [code]
	Structs for basic number and string arrays (Numa, Numaa, Numa2d, NumaHash and Sarray)
file	arrayaccess.c [code]
	Function access to pixels in 32-bit arrays.
file	arrayaccess.h [code]
	Macro access to pixels in 32-bit arrays.
file	bardecode.c [code]
	Decode barcodes after sequence of widths is found.
file	baseline.c [code]
	Find text baselines; determine and remove local skew.
file	bbuffer.c [code]
	Implements ByteBuffer, a byte queue; used for zlib comp/decomp in memory.
file	bbuffer.h [code]
	Struct for expandable byte buffer (see bbuffer.c)
file	bilinear.c [code]
	4-pt bilinear transforms on images and coordinates, with sampling and interpolation
file	binarize.c [code]
	Special binarization methods, locally adaptive: Otsu and Sauvola.
file	binexpand.c [code]
	Integer upscaling of 1 bpp images by replicated expansion.
file	binexpandlow.c [code]
	Low-level implementation of integer upscaling.
file	binreduce.c [code]
	Power of 2 integer reduction of 1 bpp images by sampling and rank value.
file	binreducelow.c [code]
	Low-level implementation of power of 2 reduction.
file	blend.c [code]
	Blend (optionally with a mask) and re-coloring images.
file	bmf.c [code]
	Generation of bitmap fonts.
file	bmf.h [code]
	Structs for bitmap fonts.
file	bmp.h [code]
	Structs for bmp file format (uncompressed)
file	bmpio.c [code]
	Read/write bmp format, from/to file and memory.
file	bmpiostub.c [code]
	Read/write bmp format, from/to file and memory.
file	boxbasic.c [code]
	Implementation of Box, Boxa (Box array), and Boxaa classes.
file	boxfunc1.c [code]
	Box intersection, union, containment; Boxa union, extent, permutation.
file	boxfunc2.c [code]
	Boxa/Box transforms; Boxa/Boxaa sorting; Boxaa utilities.
file	boxfunc3.c [code]
	Mask <-> Boxa; painting into and drawing Boxa.
file	bytearray.c [code]
	Functions for handling byte arrays, in analogy with C++ 'strings'.
file	ccbord.c [code]
	Border representation of connected components: display and svg serialization.
file	ccbord.h [code]
	Structs for representation of 1 bpp component outlines.
file	ccthin.c [code]
	Connected-component-preserving thinning.
file	classapp.c [code]
	Unsupervised classification of connected components and words; image comparison using word bounding boxes.
file	colorcontent.c [code]
	Measure and map the color content (divergence from gray) of an image.
file	colormap.c [code]
	Implements PixColormap; colormap conversions, serialization, transforms.
file	colormorph.c [code]
	Color morphological operations (apply grayscale separately to each component)
file	colorquant1.c [code]
	Octcube color quantization.
file	colorquant2.c [code]
	Modified median cut color quantization (Heckbert)
file	colorseg.c [code]
	Unsupervised color segmentation; selection and display of color content in HSV.
file	colorspace.c [code]
	Colorspace conversions between RGB, HSV, and YUV.
file	compare.c [code]
	Pix equality, binary Pix correlation, image differences.
file	conncomp.c [code]
	Connected component counting and extraction (Heckbert's seedfill algorithm)
file	convertfiles.c [code]
	Perform depth conversion on selected files.
file	convolve.c [code]
	Grayscale, color, float, double convolution; windowed mean, block sum and rank filters; census transform.
file	convolvelow.c [code]
	Optimized low-level implementation of grayscale convolution and binary rank filter.
file	correlscore.c [code]
	Correlation between pairs of binary images.
file	dewarp.c [code]
	Dewarp scanned book pages by generating a vertical disparity array based on textlines.
file	dewarp.h [code]
	Data structure to hold arrays and results for generating a vertical disparity array based on textlines.
file	dwacomb.2.c [code]
	DWA morphology with auto-generated comb Sels for composite operations on brick Sels.
file	dwacomblow.2.c [code]
	Low-level Sel implementation for dwacomb.2.c.
file	edge.c [code]
	Sobel and related edge filters.
file	endianness.h [code]
	Machine endian test helper.
file	endiantest.c [code]
file	enhance.c [code]
	Image enhancements: gamma TRC mapping; contrast enhancement, histogram eq; unsharp-masking; hue and saturation.
file	environ.h [code]
	Specifies external libraries to be used, and whether the runtime supports output redirection from files to memory.
file	fhmtauto.c [code]
	Code generator, writes dwa code for user-supplied hit-miss transform Sels.
file	fhmtgen.1.c [code]
	DWA morphology with auto-generated hit-miss sels (high-level)
file	fhmtgenlow.1.c [code]
	Low-level Sel implementation for fhmtgen.1.c.
file	finditalic.c [code]
	Identifies italic words.
file	flipdetect.c [code]
	Page orientation detection (on roman text)
file	fliphmtgen.c [code]
	Hit-miss transforms for flipdetect.c.
file	fmorphauto.c [code]
	Code generator, writes dwa code for erosion, dilation, opening and closing, for user-supplied Sels.
file	fmorphgen.1.c [code]
	DWA morphology with auto-generated brick sels (high-level)
file	fmorphgenlow.1.c [code]
	Low-level Sel implementation for fmorphgen.1.c.
file	fpix1.c [code]
	Implements FPix and DPix classes (float and double images)
file	fpix2.c [code]
	FPix operations: interconversion FPix <-> Pix; borders; rasterop; arithmetic.
file	freetype.c [code]
	Display freetype fonts in a pix.
file	freetype.h [code]
	Display freetype fonts in a pix.
file	gifio.c [code]
	Read/write gif format from/to file and memory.
file	gifiostub.c [code]
	Read/write gif format from/to file and memory.
file	gplot.c [code]
	Basic gnuplot-based plotting; serialization of plots.
file	gplot.h [code]
	Struct and parameters for generating gnuplot files.
file	graphics.c [code]
	Rendering shapes from lines (using Pta representation)
file	graymorph.c [code]
	Top-level grayscale morphological operations.
file	graymorphlow.c [code]
	Low-level implementation of grayscale morphology.
file	grayquant.c [code]
	Standard, simple, general grayscale quantization.
file	grayquantlow.c [code]
	Low-level implementation for some grayscale quantiziation functions.
file	heap.c [code]
	Implements heap of generic pointers to structs that are keyed by a float, used for priority queue.
file	heap.h [code]
	Struct for representing generic expandable priority queue (L_Heap)
file	imageio.h [code]
	Enums for supported image file formats.
file	jbclass.c [code]
	data extraction from a set of pages for jbig2 compression
file	jbclass.h [code]
	Structs for unsupervised classification of 1 bpp components from a set of pages; used for jbig2 compression.
file	jpegio.c [code]
	Read/write jpeg format from/to file and memory.
file	jpegiostub.c [code]
	Read/write jpeg format from/to file and memory.
file	kernel.c [code]
	Basic operations on image kernels for convolution; special kernels.
file	leptprotos.h [code]
	ANSII C headers for all functions in the library, automatically generated by xtractprotos.
file	leptwin.c [code]
	Leptonica routines needed only on Microsoft Windows.
file	leptwin.h [code]
	ANSII C headers for Leptonica routines needed only on Microsoft Windows.
file	libversions.c [code]
	Returns string with image library versions.
file	list.c [code]
	Implements doubly-linked list of generic pointers.
file	list.h [code]
	Struct for generic double-linked list; macros for list traversal.
file	maze.c [code]
	A game with a pedagogical slant: generate and search binary and grayscale mazes.
file	morph.c [code]
	Binary morphological operations (dilate, erode, hit-miss, open, close)
file	morph.h [code]
	Structs for image morphology (Sel, Sela) and convolution (Kernel), with enum flags.
file	morphapp.c [code]
	Composite morph ops: component-wise, union/isect, tophat, gradient, granulometry.
file	morphdwa.c [code]
	Binary morphological (dwa) operations.
file	morphseq.c [code]
	Interpreter for morphological operations, including binary expansion and reduction.
file	numabasic.c [code]
	Basic operations for float/int arrays (Numa, Numaa, Numa2d, NumaHash)
file	numafunc1.c [code]
	Arithmetic, data extraction, interpolation, sorting on numas.
file	numafunc2.c [code]
	Shift, scale, convolve, histograms, rank statistics, splitting distributions, extrema finding, threshold crossing, frequency analysis.
file	pageseg.c [code]
	Top-level page segmentation, halftone region extraction, textline extraction.
file	paintcmap.c [code]
	Paint onto colormap images - regions, masks.
file	parseprotos.c [code]
	Parse output of cpp to generate ANSII C function prototypes from a file of C functions.
file	partition.c [code]
	Bruel algorithm for extracting large whitespace boxes from a binary image: classification and location of connected components (characters or words)
file	pdfio.c [code]
	Read/write pdf format from/to file and memory.
file	pdfiostub.c [code]
	Read/write pdf format from/to file and memory.
file	pix.h [code]
	Basic file defining image and image-related structs (Pix, PixColormap, Pixa, Pixaa, Box, Boxa, Boxaa, Pta, Ptaa, Pixacc, PixTiling, FPix, DPix, PixComp, PixaComp), along with enums for many operations.
file	pix1.c [code]
	Implements Pix (image) class - the fundamental one for this library.
file	pix2.c [code]
	Pixel poking of image, pad and border pixels.
file	pix3.c [code]
	Masking and logical ops, counting, mirrored tiling.
file	pix4.c [code]
	Histograms, fg/bg estimation, rectangle extraction.
file	pix5.c [code]
	Property measurement of 1bbp images, rectangular region extraction, property measurement along lines, cropping to foreground.
file	pixabasic.c [code]
	Implements Pixa (array of Pix) and Pixaa (2d array of Pix) class.
file	pixacc.c [code]
	Simple interface for grayscale image arithmetic.
file	pixafunc1.c [code]
	Binary Pixa (array of Pix) filtering, sorting, clipping. See conncomp.c.
file	pixafunc2.c [code]
	Render a Pixa or Pixaa in a Pix.
file	pixalloc.c [code]
	Custom memory allocation for Pix memory.
file	pixarith.c [code]
	Grayscale image arithmetic.
file	pixcomp.c [code]
	Handles compressed pix arrays in memory.
file	pixconv.c [code]
	Convert between images of different types without scaling.
file	pixtiling.c [code]
	Split an image into tiles and perform operations independently on each tile.
file	pngio.c [code]
	Read/write png format from/to file and memory.
file	pngiostub.c [code]
	Read/write png format from/to file and memory.
file	pnmio.c [code]
	Read/write pnm format from/to file and memory.
file	pnmiostub.c [code]
	Read/write pnm format from/to file and memory.
file	projective.c [code]
	4-pt projective transforms on images and coordinates, with sampling and interpolation
file	psio1.c [code]
	High level PostScript device driver for wrapping sets of images in PostScript.
file	psio1stub.c [code]
	High level PostScript device driver for wrapping sets of images in PostScript.
file	psio2.c [code]
	Lower-level PostScript device driver for wrapping images.
file	psio2stub.c [code]
	Lower-level PostScript device driver for wrapping images.
file	ptabasic.c [code]
	Implements 1d and 2d arrays of points (Pta, Ptaa)
file	ptafunc1.c [code]
	Manipulation/calculations using arrays of points.
file	ptra.c [code]
	Implements 1d and 2d arrays of generic pointers (Ptra, Ptraa)
file	ptra.h [code]
	Structs for generic expandable arrays (L_Ptra, L_Ptraa)
file	quadtree.c [code]
	Quadtree creation and statistics.
file	queue.c [code]
	Implements queue of generic pointers.
file	queue.h [code]
	Struct for generic expandable queue (L_Queue)
file	rank.c [code]
	Rank order filters (generalization of min/median/max filters)
file	readbarcode.c [code]
	Early beta code for locating and identifying line widths in 1d barcodes.
file	readbarcode.h [code]
	Enums and consts for reading 1d barcodes.
file	readfile.c [code]
	Pix from memory and disk; detecting format.
file	regutils.c [code]
	Regression test utilities.
file	regutils.h [code]
	Regression test parameter packer.
file	rop.c [code]
	General rasterops. "pixRasterop() is your friend; it is worth memorizing!".
file	ropiplow.c [code]
	Low-level implementation of in-place rasterops.
file	roplow.c [code]
	Low-level general rasterop implementation.
file	rotate.c [code]
	Top-level image rotation by interpolation and sampling.
file	rotateam.c [code]
	Interpolated image rotation.
file	rotateamlow.c [code]
	Low-level helpers for interpolated rotation.
file	rotateorth.c [code]
	Orthogonal image rotation and flips.
file	rotateorthlow.c [code]
	Low-level helpers for orthogonal rotation.
file	rotateshear.c [code]
	Image rotation by shear.
file	runlength.c [code]
	Run-length-encoding, horizontal and vertical run membership.
file	sarray.c [code]
	Impements an array of C strings, and useful utilities based on it.
file	scale.c [code]
	Image up- and down-scaling, by linear interpolation, area mapping, and sampling; scaling from binary to gray; mipmap scaling; upscaling with thresholding; downscaling with min, max and rank value.
file	scalelow.c [code]
	Low-level implementation of scaling functions.
file	seedfill.c [code]
	Binary and gray seedfill; distance functions; voronoi-like seed spreading; local extrema.
file	seedfilllow.c [code]
	Low-level implementation of binary and gray seedfill.
file	sel1.c [code]
	Implements Sel (morph structuring element) and Sela (array of sel)
file	sel2.c [code]
	Contains definitions of simple structuring elements.
file	selgen.c [code]
	Generate hit-miss Sels for doing a loose match to a small bitmap.
file	shear.c [code]
	Image shear about arbitrary lines and special points.
file	skew.c [code]
	Find and remove text page skew.
file	spixio.c [code]
	Fast pix serialization to/from file.
file	stack.c [code]
	Implements a stack of generic pointers.
file	stack.h [code]
	Struct for generic expandable stack (L_Stack)
file	sudoku.c [code]
	Solve a sudoku by brute force search.
file	sudoku.h [code]
	Sudoku related structures.
file	textops.c [code]
	Simple utility to put text on images.
file	tiffio.c [code]
	Read/write tiff format from/to file and memory.
file	tiffiostub.c [code]
	Read/write tiff format from/to file and memory.
file	utils.c [code]
	Error, warning and info macros; safe string ops; file <-> memory ops; byte-swapping, file naming and timing ops.
file	viewfiles.c [code]
	Generates html for viewing a directory of images.
file	warper.c [code]
	Simple captcha generator based on random warping.
file	watershed.c [code]
	Find watershed basins from specified seeds in grayscale image.
file	watershed.h [code]
	Struct for generating watershed information from a grayscale image.
file	webpio.c [code]
	Read/write webp format from/to file.
file	webpiostub.c [code]
	Read/write webp format from/to file.
file	writefile.c [code]
	Pix to memory and disk; selecting format.
file	xtractprotos.c [code]
file	zlibmem.c [code]
	Compresses and decompresses a byte array from one memory buffer to another.
file	zlibmemstub.c [code]
	zlib operations in memory, using bbuffer