/** * Fills the whole image with the specified pixel value * * @param img An image. * @param value The value that the image is being filled with. */ public static void fill(InterleavedI8 img, byte... value) { if (value.length != img.numBands) throw new IllegalArgumentException("Unexpected number of bands"); final int h = img.getHeight(); final int w = img.getWidth(); byte[] data = img.data; for (int y = 0; y < h; y++) { int index = img.getStartIndex() + y * img.getStride(); for (int x = 0; x < w; x++) { for (int k = 0; k < img.numBands; k++) data[index++] = value[k]; } } }
/** * Fills the whole image with random values * * @param img An image. * @param rand The value that the image is being filled with. */ public static void randomize(InterleavedI8 img, Random rand) { final int h = img.getHeight(); final int w = img.getWidth(); byte[] data = img.data; int range = Byte.MAX_VALUE - Byte.MIN_VALUE; for (int y = 0; y < h; y++) { int index = img.getStartIndex() + y * img.getStride(); for (int x = 0; x < w; x++) { for (int k = 0; k < img.numBands; k++) data[index++] = (byte) (rand.nextInt(range) + Byte.MIN_VALUE); } } } }
final int offsetR = kernelWidth-offsetL-1; final int imgWidth = output.getWidth(); final int imgHeight = output.getHeight(); final int numBands = output.getNumBands();
public static void vertical( Kernel1D_S32 kernel, InterleavedU16 src, InterleavedI8 dst , int divisor ) { final short[] dataSrc = src.data; final byte[] dataDst = dst.data; final int[] dataKer = kernel.data; final int offset = kernel.getOffset(); final int kernelWidth = kernel.getWidth(); final int numBands = src.getNumBands(); final int halfDivisor = divisor/2; final int imgWidth = dst.getWidth(); final int imgHeight = dst.getHeight(); final int yEnd = imgHeight-(kernelWidth-offset-1); for( int y = offset; y < yEnd; y++ ) { int indexDst = dst.startIndex+y*dst.stride; int indexSrcStart = src.startIndex+(y-offset)*src.stride; for (int x = 0; x < imgWidth; x++) { for (int band = 0; band < numBands; band++) { int indexSrc = indexSrcStart + band; int total = 0; for (int k = 0; k < kernelWidth; k++) { total += (dataSrc[indexSrc] & 0xFFFF)* dataKer[k]; indexSrc += src.stride; } dataDst[indexDst++] = (byte)((total+halfDivisor)/divisor); } indexSrcStart += numBands; } } }
public static void vertical( Kernel1D_S32 kernel, InterleavedU8 src, InterleavedI8 dst , int divisor ) { final byte[] dataSrc = src.data; final byte[] dataDst = dst.data; final int[] dataKer = kernel.data; final int offset = kernel.getOffset(); final int kernelWidth = kernel.getWidth(); final int numBands = src.getNumBands(); final int halfDivisor = divisor/2; final int imgWidth = dst.getWidth(); final int imgHeight = dst.getHeight(); final int yEnd = imgHeight-(kernelWidth-offset-1); for( int y = offset; y < yEnd; y++ ) { int indexDst = dst.startIndex+y*dst.stride; int indexSrcStart = src.startIndex+(y-offset)*src.stride; for (int x = 0; x < imgWidth; x++) { for (int band = 0; band < numBands; band++) { int indexSrc = indexSrcStart + band; int total = 0; for (int k = 0; k < kernelWidth; k++) { total += (dataSrc[indexSrc] & 0xFF)* dataKer[k]; indexSrc += src.stride; } dataDst[indexDst++] = (byte)((total+halfDivisor)/divisor); } indexSrcStart += numBands; } } }
final int offsetX1 = kernelWidthX-offsetX-1; final int imgWidth = dst.getWidth(); final int imgHeight = dst.getHeight(); final int numBands = dst.getNumBands();