Examples of Gray8Image

jjil.core.Gray8Image
Gray8Image is the image type used to store a signed 8-bit image. Note that Java limitations (no unsigned byte) make it necessary to treat alll 8-bit images as signed. @author webb
net.sourceforge.jiu.data.Gray8Image
Interface for grayscale images using integer samples that are eight bits large. Valid sample values must lie in the interval 0 to 255 (including both of those values). Like all grayscale images, implementations of this class are supposed to have one channel only. Simply merges the two interfaces GrayIntegerImage and ByteChannelImage without adding new methods. @author Marco Schmidt @see ByteChannelImage @see GrayIntegerImage

Examples of jjil.core.Gray8Image

                    imageFirst.toString(),
                    imageSecond.toString(),
                    null);
            
        }
        Gray8Image gray1 = (Gray8Image) imageFirst;
        Gray8Image gray2 = (Gray8Image) imageSecond;
        byte[] data1 = gray1.getData();
        byte[] data2 = gray2.getData();
        for (int i=0; i<data1.length; i++) {
            data1[i] = (byte) Math.min(
                    Byte.MAX_VALUE, 
                    Math.max(Byte.MIN_VALUE, (data1[i] + data2[i])));
        }

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Examples of jjil.core.Gray8Image

                  null,
                  null);
        }
        RgbImage rgb = (RgbImage) image;
        int[] rgbData = rgb.getData();
        Gray8Image gray = new Gray8Image(image.getWidth(), image.getHeight());
        byte[] grayData = gray.getData();
        if (colorChosen.equals(RED)) {
            for (int i=0; i<image.getWidth() * image.getHeight(); i++) {
                /* get individual color value, unmasking it from the
                 * ARGB word
                 */

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Examples of jjil.core.Gray8Image

                      ErrorCodes.SHRINK_OUTPUT_LARGER_THAN_INPUT,
                      image.toString(),
                      this.toString(),
                      null);
        }
        Gray8Image input = (Gray8Image) image;
        /* horizontal shrink */
        Gray32Image horiz = shrinkHoriz(input);
        /* vertical shrink */
        Gray8Image result = shrinkVert(horiz);
        super.setOutput(result);
    }

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Examples of jjil.core.Gray8Image

     * @param input the input image.
     * @returns the shrunk image.
     */
    private Gray8Image shrinkVert(Gray32Image input) {
        /* vertical shrink */
        Gray8Image vert = new Gray8Image(input.getWidth(), this.cHeight);
        int[] inData = input.getData();
        byte[] outData = vert.getData();
        int[] nPixelSum = new int[input.getWidth()];
        for (int i=0; i<input.getWidth(); i++) {
            nPixelSum[i] = 0;
        }
        int nPos = 0;

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Examples of jjil.core.Gray8Image

                    ErrorCodes.IMAGE_NOT_GRAY8IMAGE,
                    image.toString(),
                    null,
                    null);
        }
        Gray8Image gray = (Gray8Image) image;
        Gray32Image gray32 = new Gray32Image(image.getWidth(), image.getHeight());
        byte[] grayData = gray.getData();
        int[] gray32Data = gray32.getData();
        for (int i=0; i<gray.getWidth() * gray.getHeight(); i++) {
            /* Convert from signed byte value to unsigned byte for storage
             * in the 32-bit image.
             */
            int grayUnsigned = (grayData[i]) - Byte.MIN_VALUE;
            /* Assign 32-bit output */

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Examples of jjil.core.Gray8Image

                    null,
                    null);
        }
        RgbImage rgb = (RgbImage) image;
        int[] rgbData = rgb.getData();
        Gray8Image gray = new Gray8Image(image.getWidth(), image.getHeight());
        byte[] grayData = gray.getData();
        for (int i=0; i<image.getWidth() * image.getHeight(); i++) {
            /* get individual r, g, and b values, unmasking them from the
             * ARGB word. 
             */
            byte r = RgbVal.getR(rgbData[i]);

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Examples of jjil.core.Gray8Image

                      ErrorCodes.IMAGE_NOT_GRAY8IMAGE,
                      image.toString(),
                      null,
                      null);
        }
        Gray8Image imageInput = (Gray8Image) image;
        if (this.cX + this.cWidth > image.getWidth() ||
            this.cY + this.cHeight > image.getHeight()) {
            throw new Error(
                            Error.PACKAGE.CORE,
                            jjil.core.ErrorCodes.BOUNDS_OUTSIDE_IMAGE,
                            image.toString(),
                            this.toString(),
                            null);
        }
        Gray8Image imageResult = new Gray8Image(this.cWidth,this.cHeight);
        byte[] src = imageInput.getData();
        byte[] dst = imageResult.getData();
        for (int i=0; i<this.cHeight; i++) {
            System.arraycopy(
                    src, 
                    (i+this.cY)*image.getWidth() + this.cX,
                    dst,

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Examples of jjil.core.Gray8Image

                      ErrorCodes.IMAGE_NOT_GRAY8IMAGE,
                      image.toString(),
                      null,
                      null);
        }
        Gray8Image input = (Gray8Image) image;
        Gray8Image result = new Gray8Image(image.getWidth(), image.getHeight());
        byte[] bIn = input.getData();
        byte[] bResult = result.getData();
        int[] wCoeff = this.nCoeff[this.cSigma];
        int cHeight = input.getHeight();
        for (int j=0; j<input.getWidth(); j++) {
            for (int i=0; i<cHeight; i++) {
                /* left side of Gaussian */

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Examples of jjil.core.Gray8Image

              ErrorCodes.IMAGE_NOT_GRAY8IMAGE,
              image.toString(),
              null,
              null);
        }
        Gray8Image input = (Gray8Image) image;
        Gray8Image result = new Gray8Image(image.getWidth(), image.getHeight());
        byte[] bIn = input.getData();
        byte[] bResult = result.getData();
        int[] wCoeff = this.nCoeff[this.cSigma];
        int cWidth = input.getWidth();
        for (int j=0; j<cWidth; j++) {
            for (int i=0; i<input.getHeight(); i++) {
                /* top side of Canny operator */

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Examples of jjil.core.Gray8Image

        
        }


        int wInput[] = ((RgbImage)imInput).getData();
        int wBack[] = this.rgbBack.getData();
        Gray8Image grayOut = new Gray8Image(
                this.rgbBack.getWidth(), 
                this.rgbBack.getHeight());        
        byte bGray[] = grayOut.getData();
        for (int i=0; i<imInput.getWidth() * imInput.getHeight(); i++) {
            int rIn = RgbVal.getR(wInput[i]);
            int gIn = RgbVal.getG(wInput[i]);
            int bIn = RgbVal.getB(wInput[i]);
            int rBack = RgbVal.getR(wBack[i]);

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