First, i am extracting images from the video stream by taking a snap shot of
each images from the video, and then I extracted the pixels data from those
images using pixelGrabbers. This return a byte[] array of pixels information of
the image. then i create BufferedImage using the method i posted above, but the
way that i have written can cause out of heap memory error because i am
declaring "new" everytime i got a new dataBuffer. the dimension of the byte[]
dataBuffer is the same; the only change is the pixel info. Here is some part of
my program:
public class ExtractImage{
//start video stream
//then take a snap shot of video at every 5 seconds.
//then extract the pixel info from the snap shot image using pixelsGrabber, and
//then put that data in the byte[] dataBuffer array.
//After that produce BufferedImage or RenderedImage by calling this
//produceRenderedImage method.
public BufferedImage produceRenderedImage(byte[] dataBuffer, int width, int
height)
{
DataBuffer dBuffer = new DataBufferByte(dataBuffer, width * height);
WritableRaster wr =
Raster.createInterleavedRaster(dBuffer,width,height,width,1,new int[]{0},null);
ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
ColorModel cm = new ComponentColorModel(cs,false, false, Transparency.OPAQUE,
DataBuffer.TYPE_BYTE);
BufferedImage bi = new BufferedImage(cm, wr, false, null);
return bi;
}
}
thanks for all your help. i really appreciated it.
Francis
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