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Get the pixel value from the color object using the getRGB() method of the Color class. Set the new pixel value to the image by passing the x and y positions along with the new pixel value to the setRGB() method.
An alpha value of zero represents full transparency, and a value of (2^bitdepth)-1 represents a fully opaque pixel. Intermediate values indicate partially transparent pixels that can be combined with a background image to yield a composite image. (Thus, alpha is really the degree of opacity of the pixel.
A BufferedImage is essentially an Image with an accessible data buffer. It is therefore more efficient to work directly with BufferedImage. A BufferedImage has a ColorModel and a Raster of image data. The ColorModel provides a color interpretation of the image's pixel data.
To Draw on a BufferedImage To draw on anything, you need a Graphics or Graphics2D drawing context. You can get a graphics context from an image like this: Graphics2D gp = myImage. createGraphics(); gp.
How do I change the global alpha value of a BufferedImage in Java? (I.E. make every pixel in the image that has a alpha value of 100 have a alpha value of 80)
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