Examples of jjil.core.Sequence

jjil.core.Sequence
Sequence is used to construct a sequence of image processing pipeline stages. Each Sequence object contains a PipelineStage, which can be null, and a Sequence object, which can also be null. The PipelineStage is the head of the list of PipelineStage's starting here, and the Sequence object is the rest of the list. The Sequence object can be non-null only if the PipelineStage object is non-null. @author webb

     */
  public boolean push(RgbImage rgb) throws jjil.core.Error {
    final int nReducedHeight = 300;
    final int nReducedWidth = 400;
    // build pipeline
    Sequence seq = new Sequence();
    seq.add(new RgbSubSample(nReducedWidth, nReducedHeight));
    seq.add(new RgbAvgGray());
    seq.add(new Gray8HistEq());
    seq.add(new Gray8HorizVertContrast(5, 2, -8, 3));
    seq.add(new Gray16Threshold(20));
    seq.push(rgb);
    Gray8ConnComp gcc = new Gray8ConnComp();
    Image imThresh = seq.getFront();
    Gray8Rgb g2r = new Gray8Rgb();
    g2r.push(imThresh);
    if (DetectBarcode.bDebug) {
      Debug debug = new Debug();
      debug.toFile((RgbImage)g2r.getFront(), "test.jpg");

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            int cWidth, 
            int cHeight) throws jjil.core.Error
    {
        /* Build an image pipeline to do the work.
         */
        Sequence seq = new Sequence();
        /* 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);
        seq.add(new Gray8Crop(dLeft, dTopLeftY, cWidthExp, cHeight));
        /* Apply the pipeline to get the cropped image.
         */
        seq.push(image);
        Image imageResult = seq.getFront();
        if (!(imageResult instanceof Gray8Image)) {
            throw new jjil.core.Error(
            jjil.core.Error.PACKAGE.ALGORITHM,
            jjil.algorithm.ErrorCodes.IMAGE_NOT_GRAY8IMAGE,
            imageResult.toString(),

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        // so it is divisible by cHeightReduce, a power of 2
        int cCroppedHeight = cHeightReduce * 
                (imageInput.getHeight() / cHeightReduce); 
        int cTotalWidth = dRight - dLeft;
        Gray8Crop crop = new Gray8Crop(dLeft, 0, cTotalWidth, cCroppedHeight);
        Sequence seq = new Sequence(crop);
        seq.add(new Gray8Reduce(1,cHeightReduce));
        int cReducedHeight = cCroppedHeight / cHeightReduce;
        // we stretch the cropped image so cInputWidth becomes cTargetWidth. This means
        // cTotalWidth must become cTargetWidth * cTotalWidth / cInputWidth
        Gray8RectStretch stretch = new Gray8RectStretch(
                cTargetWidth * cTotalWidth / cInputWidth, cReducedHeight);
        seq.add(stretch);
        seq.add(new Gray8HistEq());
        seq.push(imageInput);
        return seq.getFront();
    }

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     * @param nSigma the sigma of the window to blur over
     * @throws jjil.core.Error if nSigma is out of range.
     */
    public void setWidth(int nSigma) throws jjil.core.Error {
        this.nSigma = nSigma;
        this.seqR = new Sequence(new RgbSelectGray(RgbSelectGray.RED));
        this.seqR.add(new Gray8GaussSmoothVert(nSigma));
        this.seqG = new Sequence(new RgbSelectGray(RgbSelectGray.GREEN));
        this.seqG.add(new Gray8GaussSmoothVert(nSigma));
        this.seqB = new Sequence(new RgbSelectGray(RgbSelectGray.BLUE));
        this.seqB.add(new Gray8GaussSmoothVert(nSigma));
    }

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    }
    
    private void setupPipeline() throws jjil.core.Error
    {
        RgbSelectGray sel = new RgbSelectGray(RgbSelectGray.RED);
        this.seqR = new Sequence(sel);
        Gray8RectStretch gs = new Gray8RectStretch(cWidth, cHeight);
        this.seqR.add(gs);
        sel = new RgbSelectGray(RgbSelectGray.GREEN);
        this.seqG = new Sequence(sel);
        gs = new Gray8RectStretch(cWidth, cHeight);
        this.seqG.add(gs);
        sel = new RgbSelectGray(RgbSelectGray.BLUE);
        this.seqB = new Sequence(sel);
        gs = new Gray8RectStretch(cWidth, cHeight);
        this.seqB.add(gs);
    }

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     * @param nSigma the sigma of the window to blur over
     * @throws jjil.core.Error if sigma out of range
     */
    public void setSigma(int nSigma) throws jjil.core.Error {
        this.nSigma = nSigma;
        this.seqR = new Sequence(new RgbSelectGray(RgbSelectGray.RED));
        this.seqR.add(new Gray8GaussHoriz(nSigma));
        this.seqG = new Sequence(new RgbSelectGray(RgbSelectGray.GREEN));
        this.seqG.add(new Gray8GaussHoriz(nSigma));
        this.seqB = new Sequence(new RgbSelectGray(RgbSelectGray.BLUE));
        this.seqB.add(new Gray8GaussHoriz(nSigma));
    }

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        }
        int nWidth = this.nColEnd - this.nColStart;
      int nHeight = Math.max(
                this.nRowBotStart - this.nRowTopStart, 
                this.nRowBotEnd - this.nRowTopEnd);
        this.seqR = new Sequence(new RgbSelectGray(RgbSelectGray.RED));
        this.seqR.add(new Gray8VertTrapWarp(this.nColStart, this.nColEnd,
                this.nRowTopStart, this.nRowBotStart, this.nRowTopEnd,
                this.nRowBotEnd));
        this.seqG = new Sequence(new RgbSelectGray(RgbSelectGray.GREEN));
        this.seqG.add(new Gray8VertTrapWarp(this.nColStart, this.nColEnd,
                this.nRowTopStart, this.nRowBotStart, this.nRowTopEnd,
                this.nRowBotEnd));
        this.seqB = new Sequence(new RgbSelectGray(RgbSelectGray.BLUE));
        this.seqB.add(new Gray8VertTrapWarp(this.nColStart, this.nColEnd,
                this.nRowTopStart, this.nRowBotStart, this.nRowTopEnd,
                this.nRowBotEnd));
    }

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    }
    
    private void setupPipeline() throws jjil.core.Error
    {
        RgbSelectGray sel = new RgbSelectGray(RgbSelectGray.RED);
        this.seqR = new Sequence(sel);
        Gray8Shrink gs = new Gray8Shrink(cWidth, cHeight);
        this.seqR.add(gs);
        sel = new RgbSelectGray(RgbSelectGray.GREEN);
        this.seqG = new Sequence(sel);
        gs = new Gray8Shrink(cWidth, cHeight);
        this.seqG.add(gs);
        sel = new RgbSelectGray(RgbSelectGray.BLUE);
        this.seqB = new Sequence(sel);
        gs = new Gray8Shrink(cWidth, cHeight);
        this.seqB.add(gs);
    }

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Related Classes of jjil.core.Sequence

barcode.DetectBarcode

barcode.ReadBarcode

jjil.algorithm.RgbHorizGaussSmooth

jjil.algorithm.RgbShrink

jjil.algorithm.RgbStretch

jjil.algorithm.RgbVertGaussSmooth

jjil.algorithm.RgbVertTrapWarp

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