Examples of jjil.algorithm.RgbSelectGray

jjil.algorithm.RgbSelectGray

Transforms a RgbImage into a Gray8Image by selecting one of the three bands. The pixel value chosen is adjusted from the range 0→255 to the range -128→127.

Usage:
RgbImage imageRgb = ...; RgbSelectGray rgb = new RgbSelectGray(RgbSelectGray.RED); rgb.push(imageRgb);
@author webb

    private Gray8AffineWarp grayWarp;
    private RgbSelectGray selectRed, selectGreen, selectBlue;
    
    public RgbAffineWarp(double[][] warp) throws Error {
        this.grayWarp = new Gray8AffineWarp(warp);
        this.selectRed = new RgbSelectGray(RgbSelectGray.RED);
        this.selectGreen = new RgbSelectGray(RgbSelectGray.GREEN);
        this.selectBlue = new RgbSelectGray(RgbSelectGray.BLUE);
    }

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        /* First convert the color image to black and white by selecting the
         * green channel. We use the green channel because it is the highest
         * resolution channel on the CCDs used in cellphones.
         */
        if (image instanceof RgbImage) {
            seq.add(new RgbSelectGray(RgbSelectGray.GREEN));
        }
        /* Now crop the gray image.
         */
        int dLeft = Math.max(0, dTopLeftX - cWidth / 12);
        int cWidthExp = Math.min(image.getWidth() - dLeft, cWidth * 7 / 6);

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Related Classes of jjil.algorithm.RgbSelectGray

barcode.ReadBarcode

jjil.algorithm.j2se.RgbAffineWarp

jjil.core.Error

jjil.core.Gray8Image

jjil.core.RgbImage

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