Image Processing on Android -
i'm writing application android. need make image processing on picture taken camera. use camera.picturecallback photo, , picture in byte array. problem want make operations on every pixel of photo (some filtering , other stuff) guess, have photo in byte array not bad idea. don't know how interpret information in byte array... way know make processing use bitmapfactory.decodebytearray() , use bitmap object. way handle lot of image processing? right use this:
bitmap mphotopicture mphotopicture = bitmapfactory.decodebytearray(imagedata, 0 , imagedata.length);
mphotopicture = mphotopicture.copy(bitmap.config.rgb_565, true);
i appreciate help.
i'm not sure if decoding byte array best way on android, can offer know image processing in general.
if you're using rgb_565
, means each pixel 16 bits, or 2 of bytes. first 5 bits red, next 6 green, , last 5 blue. dealing hairy in java. suggest work easier format argb_8888
, mean have 32 bits, or 4 bytes per pixel, , each byte own value (alpha, red, green, blue).
to test, try setting every fourth byte, [3]
, [7]
, [11]
, etc., 0. should take out of particular channel, in case, blue.
[2]
, [6]
, [10]
, etc. green values each pixel.
(note, 4 components might go in opposite order because i'm not sure endianness! might have told how take out alpha, not blue…)
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