Exception in thread “main” java.lang.ArrayIndexOutOfBoundsException: Coordinate out of bounds

Question

BufferedImage image = ImageIO.read(new File(img path));  

int width = image.getWidth();
int height = image.getHeight();
int[][] result = new int[height][width];

for (int row = 0; row < height; row++) {
  for (int col = 0; col < width; col++) {
     result[row][col] = image.getRGB(row, col);
  }
}

and this is the exception I get :

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Coordinate out of bounds!
at sun.awt.image.ByteInterleavedRaster.getDataElements(ByteInterleavedRaster.java:301)
at java.awt.image.BufferedImage.getRGB(BufferedImage.java:871)
at PlantExtraction.main(PlantExtraction.java:46)

How can I remove these exceptions ?

run it in a debugger, so you can see which index is out of bounds when the exception is thrown. My guess is that row and column are reversed -- wouldn't the row be "Y" and the column be "X"? — Gus
– Gus, Commented Dec 3, 2014 at 5:39
IMHO the issue is at image.getRGB(row,col). See if row is related to height and col is related to width. To confirm you can limit row with width and col with height. — bprasanna
– bprasanna, Commented Dec 3, 2014 at 5:59

Raul Cacacho · Accepted Answer · 2019-01-31 17:58:39Z

6

The code

image.getRGB(row, col);

Should be

image.getRGB(col, row);

As the documentation says:

getRGB(int x, int y).

Documentation

(your col value is running upto width - which is the x-maximum of the image, so use col for x and row for y)

edited Jan 31, 2019 at 17:58

Raul Cacacho

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answered Dec 3, 2014 at 6:06

dognose

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