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和机器人比特马普 factorive. decodeByteAray () 图像类型?
原标题:android BitmapFactory.decodeByteArray() image type?


does anybody know what pixel type does BitmapFactory.decodeByteArray() returns?

在相机预览回调上使用此片段的基本 Im :

YuvImage img = new YuvImage(mLastFrame, ImageFormat.NV21, mPreviewSize.width, mPreviewSize.height, null);
ByteArrayOutputStream out = new ByteArrayOutputStream();
img.compressToJpeg(new Rect(0,0,mPreviewSize.width, mPreviewSize.height), 30, out);
return BitmapFactory.decodeByteArray(out.toByteArray(), 0, out.size());

i 可以得到一个好的 Bitmap, 我可以用它和机器人。 但是如果我想用 OpenCV 来使用它, 它不起作用, 而 OpenCV 需要 ARGB_ 8888 类型, i m 猜想, 我从 < code> decodeByteAray () 函数获得另一种类型 。

thanks,
Vlad

问题回答

您可以使用< a href=>", http:// developmenter.android.com/ reference/android/graphics/Bitmap.html#getConfig%28%29" rel=“nofollow” >Bitmap.getConfig () 来记录你由此产生的Bitmap , 并查看它是否为 ALPHA_8, RGB_565 等。





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