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5472325ffe
- Added experimental QR edge detector. - Modified pattern finder tolerance levels, as in the Java code. - Adjusted the local block binarizer slightly. - Added a simple example application. - Modified MagickBitmapSource to compute the luminance in the same way as the Java BufferedImageLuminanceSource. git-svn-id: https://zxing.googlecode.com/svn/trunk@1144 59b500cc-1b3d-0410-9834-0bbf25fbcc57
72 lines
2 KiB
C++
72 lines
2 KiB
C++
/*
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* MagickBitmapSource.cpp
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* zxing
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*
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* Created by Ralf Kistner on 16/10/2009.
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* Copyright 2008 ZXing authors All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "MagickBitmapSource.h"
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#include <iostream>
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using namespace Magick;
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MagickBitmapSource::MagickBitmapSource(Image& image) : image_(image) {
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width = image.columns();
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height = image.rows();
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pixel_cache = image.getConstPixels(0, 0, width, height);
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}
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MagickBitmapSource::~MagickBitmapSource() {
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}
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int MagickBitmapSource::getWidth() {
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return width;
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}
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int MagickBitmapSource::getHeight() {
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return height;
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}
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unsigned char MagickBitmapSource::getPixel(int x, int y) {
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const PixelPacket* p = pixel_cache + y * width + x;
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// We assume 16 bit values here
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//return (unsigned char)((((int)p->red + (int)p->green + (int)p->blue) >> 8) / 3);
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return (unsigned char)((306 * ((int)p->red >> 8) + 601 * ((int)p->green >> 8) + 117 * ((int)p->blue >> 8)) >> 10);
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}
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/** This is a more efficient implementation. */
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unsigned char* MagickBitmapSource::copyMatrix() {
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int width = getWidth();
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int height = getHeight();
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unsigned char* matrix = new unsigned char[width*height];
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unsigned char* m = matrix;
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const Magick::PixelPacket* p = pixel_cache;
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for (int y = 0; y < height; y++) {
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for (int x = 0; x < width; x++) {
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*m = (unsigned char)((306 * ((int)p->red >> 8) + 601 * ((int)p->green >> 8) + 117 * ((int)p->blue >> 8)) >> 10);
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m++;
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p++;
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}
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}
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return matrix;
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}
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