Image Processing in Java - Creating a Random Pixel Image

Prerequisites:

• Image Processing in Java - Read and Write
• Image Processing In Java - Get and Set Pixels
• Image Processing in Java - Colored Image to Grayscale Image Conversion
• Image Processing in Java - Colored Image to Negative Image Conversion
• Image Processing in Java - Colored to Red Green Blue Image Conversion
• Image Processing in Java - Colored Image to Sepia Image Conversion

In this article, we will be creating a random pixel image. For creating a random pixel image, we don't need any input image. We can create an image file and set its pixel values generated randomly.

A random image is an image in which the pixels are chosen at random, so they can take any color from the desired palette (generally 16 million colors). The resulting images look like multi-colored noise backgrounds.

Algorithm: 

1. Set the dimension of the new image file.
2. Create a BufferedImage object to hold the image. This object is used to store an image in RAM.
3. Generate random number values for alpha, red, green, and blue components.
4. Set the randomly generated ARGB (Alpha, Red, Green, and Blue) values.
5. Repeat steps 3 and 4 for each pixel of the image.

Implementation:

Output:

Note: Code will not run on online ide since it writes image in drive.