sample.c File Reference

Symbol sampling. More...

#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "jabcode.h"
#include "detector.h"
#include "decoder.h"

Macros
#define	SAMPLE_AREA_WIDTH   (CROSS_AREA_WIDTH / 2 - 2)
#define	SAMPLE_AREA_HEIGHT   20

Functions
jab_bitmap *	sampleSymbol (jab_bitmap *bitmap, jab_perspective_transform *pt, jab_vector2d side_size)
	Sample a symbol. More...
jab_bitmap *	sampleSymbolwithNc (jab_bitmap *bitmap, jab_perspective_transform *pt, jab_vector2d side_size, jab_int32 symbol_type, jab_bitmap *ch[])
	Sample a symbol. More...
jab_bitmap *	sampleCrossArea (jab_bitmap *bitmap, jab_perspective_transform *pt)
	Sample a cross area between the host and slave symbols. More...

Detailed Description

Symbol sampling.

libjabcode - JABCode Encoding/Decoding Library

Copyright 2016 by Fraunhofer SIT. All rights reserved. See LICENSE file for full terms of use and distribution.

Contact: Huajian Liu liu@s.nosp@m.it.f.nosp@m.raunh.nosp@m.ofer.nosp@m..de Waldemar Berchtold walde.nosp@m.mar..nosp@m.berch.nosp@m.told.nosp@m.@sit..nosp@m.frau.nosp@m.nhofe.nosp@m.r.de

Function Documentation

jab_bitmap* sampleCrossArea	(	jab_bitmap *	bitmap,
		jab_perspective_transform *	pt
	)

Sample a cross area between the host and slave symbols.

Parameters

bitmap	the image bitmap
pt	the transformation matrix

Returns

the sampled area matrix

jab_bitmap* sampleSymbol	(	jab_bitmap *	bitmap,
		jab_perspective_transform *	pt,
		jab_vector2d	side_size
	)

Sample a symbol.

Parameters

bitmap	the image bitmap
pt	the transformation matrix
side_size	the symbol size in module

Returns

the sampled symbol matrix

jab_bitmap* sampleSymbolwithNc	(	jab_bitmap *	bitmap,
		jab_perspective_transform *	pt,
		jab_vector2d	side_size,
		jab_int32	symbol_type,
		jab_bitmap *	ch[]
	)

Sample a symbol.

Parameters

bitmap	the image bitmap
pt	the transformation matrix
side_size	the symbol size in module
symbol_type	the symbol type (0,2,3,4,5: metadata for Nc will be sampled as black/white)
ch	the binarized color channels of the bitmap

Returns

the sampled symbol matrix