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Leptonica
1.83.1
Image processing and image analysis suite
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Go to the source code of this file.
Data Structures | |
struct | CCBord |
struct | CCBorda |
This file is internal; it is not part of the public interface. It contains definitions of data structures that use border pixels of connected components to represent the foreground pixels in an image by the border CCBord: represents a single connected component CCBorda: an array of CCBord The CCBord contains: (1) a minimally-clipped bitmap of the component (pix), (2) a boxa consisting of: for the primary component: (xul, yul) pixel location in global coords (w, h) of the bitmap for the hole components: (x, y) in relative coordinates in primary component (w, h) of the hole border (which is 2 pixels larger in each direction than the hole itself) (3) a pta ('start') of the initial border pixel location for each closed curve, all in relative coordinates of the primary component. This is given for the primary component, followed by the hole components, if any. (4) a refcount of the ccbord; used internally when a ccbord is accessed from a ccborda (array of ccbord) (5) a ptaa for the chain code for the border in relative coordinates, where the first pta is the exterior border and all other pta are for interior borders (holes) (6) a ptaa for the global pixel loc rendition of the border, where the first pta is the exterior border and all other pta are for interior borders (holes). This is derived from the local or step chain code. (7) a numaa for the chain code for the border as orientation directions between successive border pixels, where the first numa is the exterior border and all other numa are for interior borders (holes). This is derived from the local chain code. The 8 directions are 0 - 7. (8) a pta for a single chain for each c.c., comprised of outer and hole borders, plus cut paths between them, all in local coords. (9) a pta for a single chain for each c.c., comprised of outer and hole borders, plus cut paths between them, all in global coords.
Definition in file ccbord_internal.h.