无法识别彩色二维码,本地相册彩色二维码扫描不出来？？？提高扫描效率...

[deanhaiwei]

[wscjy]

您好，我已收到您的邮件，我会尽快给您回复。

[deanhaiwei]

ZXingView 可更新下

[deanhaiwei]

rawResult = mMultiFormatReader.decodeWithState(new BinaryBitmap(new GlobalHistogramBinarizer(source)));
if (rawResult == null) {
rawResult = mMultiFormatReader.decodeWithState(new BinaryBitmap(new HybridBinarizer(source)));
if (rawResult != null) {
BGAQRCodeUtil.d("GlobalHistogramBinarizer 没识别到，HybridBinarizer 能识别到");
}
}

改成
rawResult = mMultiFormatReader.decodeWithState(new BinaryBitmap(new GlobalHistogramBinarizer(source)));
if (rawResult == null) {
rawResult = mMultiFormatReader.decodeWithState(new BinaryBitmap(new HybridBinarizer(source)));
if (rawResult != null) {
BGAQRCodeUtil.d("GlobalHistogramBinarizer 没识别到，HybridBinarizer 能识别到");
}else{
rawResult = mMultiFormatReader.decodeWithState(new BinaryBitmap(new HybridBinarizer(source.invert())));
}
}

rawResult = mMultiFormatReader.decodeWithState(new BinaryBitmap(new HybridBinarizer(source.invert())));加上这个可以识别彩色二维码

[deanhaiwei]

识别的那段代码有问题！作者有空改下吧！
private Result getRawResult(Binarizer binarizer){
Result rawResult;
try {
rawResult = mMultiFormatReader.decodeWithState(new BinaryBitmap(binarizer));
}catch (Exception e){
rawResult = null;
}
return rawResult;
}

rawResult = getRawResult(new GlobalHistogramBinarizer(source));
if (rawResult == null) {
rawResult = getRawResult(new HybridBinarizer(source));
if (rawResult != null) {
BGAQRCodeUtil.d("GlobalHistogramBinarizer 没识别到，HybridBinarizer 能识别到");
}else {
rawResult = getRawResult(new HybridBinarizer(source.invert()));
}
}

---

rawResult = mMultiFormatReader.decodeWithState(new BinaryBitmap(new GlobalHistogramBinarizer(source)));
这段代码会报NotFoundException 异常
rawResult = mMultiFormatReader.decodeWithState(new BinaryBitmap(new HybridBinarizer(source)));
这段就不生效了改完识别率会提高，还能识别彩色的二维码！

[dingliufan]

是的，下载源码 按照您这样改就可以，效率还变高了

[wscjy]

您好，我已收到您的邮件，我会尽快给您回复。

[deanhaiwei]

QRCodeDecoder 类中的这个方法

/**
* 同步解析bitmap二维码。该方法是耗时操作，请在子线程中调用。
*
* @PARAM bitmap 要解析的二维码图片
* @return 返回二维码图片里的内容 或 null
*/
public static String syncDecodeQRCode(Bitmap bitmap) {
Result result;
RGBLuminanceSource source = null;
try {
int width = bitmap.getWidth();
int height = bitmap.getHeight();
int[] pixels = new int[width * height];
bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
source = new RGBLuminanceSource(width, height, pixels);
result = new MultiFormatReader().decode(new BinaryBitmap(new GlobalHistogramBinarizer(source)), ALL_HINT_MAP);
return result.getText();
} catch (Exception e) {
e.printStackTrace();
if (source != null) {
try {
result = new MultiFormatReader().decode(new BinaryBitmap(new HybridBinarizer(source)), ALL_HINT_MAP);
return result.getText();
} catch (Throwable e2) {
e2.printStackTrace();
try {
result = new MultiFormatReader().decode(new BinaryBitmap(new HybridBinarizer(source.invert())), ALL_HINT_MAP);
return result.getText();
}catch (Exception e3){
e2.printStackTrace();
}
}
}
return null;
}
}

重点是和扫描的一样
result = new MultiFormatReader().decode(new BinaryBitmap(new HybridBinarizer(source.invert()))
这样就能扫描到彩色的二维码不会返回null
source.invert() 这个是将 source 转换成了 InvertedLuminanceSource