Java和OpenCV无法将RGB .gif图像转换为灰色

2019年7月20日 246次阅读

我想使用
Java和OpenCV将图片从RGB转换为GRAY

所有扩展图像都正常工作,我拍摄灰色图像,

如果我制作.GIF图像(不移动)它会给我这个错误：

OpenCV错误：在cv :: cvtColor中断言失败(scn == 3 || scn == 4)

java代码：

Mat scrImg = Highgui.imread(path);
Mat dstImg = new Mat(scrImg.rows(),scrImg.cols(),scrImg.type());
Imgproc.cvtColor(scrImg, dstImg, Imgproc.COLOR_RGB2GRAY);

private static BufferedImage Mat2BufferedImage(Mat matrix){
	BufferedImage bimOut;
	int type;
	if(matrix.channels() == 1)
		type = BufferedImage.TYPE_BYTE_GRAY;
		
	else 
		type = BufferedImage.TYPE_3BYTE_BGR;
	
	int dataLength = matrix.channels()*matrix.cols()*matrix.rows();
	byte [] buffer = new byte[dataLength];
	bimOut = new BufferedImage(matrix.cols(),matrix.rows(),type);
	matrix.get(0,0,buffer);
	final byte[] bimPixels = ((DataBufferByte) bimOut.getRaster().getDataBuffer()).getData();
	System.arraycopy(buffer, 0, bimPixels, 0, buffer.length);
	
	return bimOut;

}

最佳答案 根据官方
documentation

Currently, the following file formats are supported:

  • Windows bitmaps – *.bmp, *.dib (always supported)
  • JPEG files – *.jpeg, *.jpg, *.jpe (see the Notes section)
  • JPEG 2000 files – *.jp2 (see the Notes section)
  • Portable Network Graphics – *.png (see the Notes section)
  • WebP – *.webp (see the Notes section)
  • Portable image format – *.pbm, *.pgm, *.ppm *.pxm, *.pnm (always supported)
  • Sun rasters – *.sr, *.ras (always supported)
  • TIFF files – *.tiff, *.tif (see the Notes section)
  • OpenEXR Image files – *.exr (see the Notes section)
  • Radiance HDR – *.hdr, *.pic (always supported)
  • Raster and Vector geospatial data supported by Gdal (see the Notes section)

显然不包括支持因为gif是一种专有格式.
http://answers.opencv.org/question/72134/cv2imread-cannot-read-gifs/

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