Examples of ae.java.awt.image.SampleModel

ae.java.awt.image.SampleModel
This abstract class defines an interface for extracting samples of pixels in an image. All image data is expressed as a collection of pixels. Each pixel consists of a number of samples. A sample is a datum for one band of an image and a band consists of all samples of a particular type in an image. For example, a pixel might contain three samples representing its red, green and blue components. There are three bands in the image containing this pixel. One band consists of all the red samples from all pixels in the image. The second band consists of all the green samples and the remaining band consists of all of the blue samples. The pixel can be stored in various formats. For example, all samples from a particular band can be stored contiguously or all samples from a single pixel can be stored contiguously.
Subclasses of SampleModel specify the types of samples they can represent (e.g. unsigned 8-bit byte, signed 16-bit short, etc.) and may specify how the samples are organized in memory. In the Java 2D(tm) API, built-in image processing operators may not operate on all possible sample types, but generally will work for unsigned integral samples of 16 bits or less. Some operators support a wider variety of sample types.
A collection of pixels is represented as a Raster, which consists of a DataBuffer and a SampleModel. The SampleModel allows access to samples in the DataBuffer and may provide low-level information that a programmer can use to directly manipulate samples and pixels in the DataBuffer.
This class is generally a fall back method for dealing with images. More efficient code will cast the SampleModel to the appropriate subclass and extract the information needed to directly manipulate pixels in the DataBuffer. @see ae.java.awt.image.DataBuffer @see ae.java.awt.image.Raster @see ae.java.awt.image.ComponentSampleModel @see ae.java.awt.image.PixelInterleavedSampleModel @see ae.java.awt.image.BandedSampleModel @see ae.java.awt.image.MultiPixelPackedSampleModel @see ae.java.awt.image.SinglePixelPackedSampleModel

                             float[] srcMinVal, float[]srcMaxVal,
                             float[] dstMinVal, float[]dstMaxVal) {
        LCMSImageLayout srcIL, dstIL;


        // Can't pass src and dst directly to CMM, so process per scanline
        SampleModel srcSM = src.getSampleModel();
        SampleModel dstSM = dst.getSampleModel();
        int srcTransferType = src.getTransferType();
        int dstTransferType = dst.getTransferType();
        boolean srcIsFloat, dstIsFloat;
        if ((srcTransferType == DataBuffer.TYPE_FLOAT) ||
            (srcTransferType == DataBuffer.TYPE_DOUBLE)) {
            srcIsFloat = true;
        } else {
            srcIsFloat = false;
        }
        if ((dstTransferType == DataBuffer.TYPE_FLOAT) ||
            (dstTransferType == DataBuffer.TYPE_DOUBLE)) {
            dstIsFloat = true;
        } else {
            dstIsFloat = false;
        }
        int w = src.getWidth();
        int h = src.getHeight();
        int srcNumBands = src.getNumBands();
        int dstNumBands = dst.getNumBands();
        float[] srcScaleFactor = new float[srcNumBands];
        float[] dstScaleFactor = new float[dstNumBands];
        float[] srcUseMinVal = new float[srcNumBands];
        float[] dstUseMinVal = new float[dstNumBands];
        for (int i = 0; i < srcNumBands; i++) {
            if (srcIsFloat) {
                srcScaleFactor[i] =  65535.0f / (srcMaxVal[i] - srcMinVal[i]);
                srcUseMinVal[i] = srcMinVal[i];
            } else {
                if (srcTransferType == DataBuffer.TYPE_SHORT) {
                    srcScaleFactor[i] = 65535.0f / 32767.0f;
                } else {
                    srcScaleFactor[i] = 65535.0f /
                        ((float) ((1 << srcSM.getSampleSize(i)) - 1));
                }
                srcUseMinVal[i] = 0.0f;
            }
        }
        for (int i = 0; i < dstNumBands; i++) {
            if (dstIsFloat) {
                dstScaleFactor[i] = (dstMaxVal[i] - dstMinVal[i]) / 65535.0f;
                dstUseMinVal[i] = dstMinVal[i];
            } else {
                if (dstTransferType == DataBuffer.TYPE_SHORT) {
                    dstScaleFactor[i] = 32767.0f / 65535.0f;
                } else {
                    dstScaleFactor[i] =
                        ((float) ((1 << dstSM.getSampleSize(i)) - 1)) /
                        65535.0f;
                }
                dstUseMinVal[i] = 0.0f;
            }
        }

View Full Code Here


    public void colorConvert(Raster src, WritableRaster dst) {


        LCMSImageLayout srcIL, dstIL;
        // Can't pass src and dst directly to CMM, so process per scanline
        SampleModel srcSM = src.getSampleModel();
        SampleModel dstSM = dst.getSampleModel();
        int srcTransferType = src.getTransferType();
        int dstTransferType = dst.getTransferType();
        int w = src.getWidth();
        int h = src.getHeight();
        int srcNumBands = src.getNumBands();
        int dstNumBands = dst.getNumBands();
        int precision = 8;
        float maxNum = 255.0f;
        for (int i = 0; i < srcNumBands; i++) {
            if (srcSM.getSampleSize(i) > 8) {
                 precision = 16;
                 maxNum = 65535.0f;
             }
        }
        for (int i = 0; i < dstNumBands; i++) {
            if (dstSM.getSampleSize(i) > 8) {
                 precision = 16;
                 maxNum = 65535.0f;
             }
        }
        float[] srcScaleFactor = new float[srcNumBands];
        float[] dstScaleFactor = new float[dstNumBands];
        for (int i = 0; i < srcNumBands; i++) {
            if (srcTransferType == DataBuffer.TYPE_SHORT) {
                srcScaleFactor[i] = maxNum / 32767.0f;
            } else {
                srcScaleFactor[i] = maxNum /
                    ((float) ((1 << srcSM.getSampleSize(i)) - 1));
            }
        }
        for (int i = 0; i < dstNumBands; i++) {
            if (dstTransferType == DataBuffer.TYPE_SHORT) {
                dstScaleFactor[i] = 32767.0f / maxNum;
            } else {
                dstScaleFactor[i] =
                    ((float) ((1 << dstSM.getSampleSize(i)) - 1)) / maxNum;
            }
        }
        int ys = src.getMinY();
        int yd = dst.getMinY();
        int xs, xd;

View Full Code Here

        }
        if ((y+height < y) || (y+height > this.minY + this.height)) {
            throw new RasterFormatException("(y + height) is outside raster");
        }


        SampleModel sm;


        if (bandList != null)
            sm = sampleModel.createSubsetSampleModel(bandList);
        else
            sm = sampleModel;

View Full Code Here

        if (w <= 0 || h <=0) {
            throw new RasterFormatException("negative "+
                                          ((w <= 0) ? "width" : "height"));
        }


        SampleModel sm = sampleModel.createCompatibleSampleModel(w,h);


        return new IntegerComponentRaster(sm, new Point(0,0));
    }

View Full Code Here

        }
        if ((y+height < y) || (y+height > this.minY + this.height)) {
            throw new RasterFormatException("(y + height) is outside raster");
        }


        SampleModel sm;


        if (bandList != null)
            sm = sampleModel.createSubsetSampleModel(bandList);
        else
            sm = sampleModel;

View Full Code Here

        if (w <= 0 || h <=0) {
            throw new RasterFormatException("negative "+
                                          ((w <= 0) ? "width" : "height"));
        }


        SampleModel sm = sampleModel.createCompatibleSampleModel(w,h);


        return new IntegerInterleavedRaster(sm, new Point(0,0));
    }

View Full Code Here

        }
        if ((y+height < y) || (y+height > this.minY + this.height)) {
            throw new RasterFormatException("(y + height) is outside of Raster");
        }


        SampleModel sm;


        if (bandList != null)
            sm = sampleModel.createSubsetSampleModel(bandList);
        else
            sm = sampleModel;

View Full Code Here

        if (w <= 0 || h <=0) {
            throw new RasterFormatException("negative "+
                                          ((w <= 0) ? "width" : "height"));
        }


        SampleModel sm = sampleModel.createCompatibleSampleModel(w, h);


        return new ShortInterleavedRaster(sm, new Point(0, 0));
    }

View Full Code Here

        }
        if ((y+height < y) || (y+height > this.height + this.minY)) {
            throw new RasterFormatException("(y + height) is outside raster");
        }


        SampleModel sm;


        if (bandList != null)
            sm = sampleModel.createSubsetSampleModel(bandList);
        else
            sm = sampleModel;

View Full Code Here

        if (w <= 0 || h <=0) {
            throw new RasterFormatException("negative "+
                                          ((w <= 0) ? "width" : "height"));
        }


        SampleModel sm = sampleModel.createCompatibleSampleModel(w,h);


        return new ByteBandedRaster(sm, new Point(0,0));
    }

View Full Code Here

0 1 2 3 4

TOP

Related Classes of ae.java.awt.image.SampleModel

ae.com.sun.imageio.plugins.bmp.BMPImageWriter

ae.com.sun.imageio.plugins.bmp.BMPImageWriterSpi

ae.com.sun.imageio.plugins.common.ImageUtil

ae.com.sun.imageio.plugins.gif.GIFImageWriter

ae.com.sun.imageio.plugins.gif.GIFImageWriterSpi

ae.com.sun.imageio.plugins.jpeg.JFIFMarkerSegment$JFIFThumbPalette

ae.com.sun.imageio.plugins.jpeg.JPEGImageWriterSpi

ae.com.sun.imageio.plugins.png.PNGImageWriter

ae.com.sun.imageio.plugins.png.PNGImageWriterSpi

ae.com.sun.imageio.plugins.png.PNGMetadata

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.