To use these functions, the Image Feature is required.
Fills the image with the given color
SELECT fill(image, 0.5) FROM Stream |
Inverts the pixel values of the given image
SELECT inv(image) FROM Stream |
Return the value of the pixel at the given location
SELECT get(image, 100, 100) FROM Stream |
Set the pixel at the given location to the given value
SELECT set(image, 100, 100, 0.5) FROM Stream |
Rotates the image at the given angle in degree.
SELECT rotate(image, 90.0) FROM Stream |
Resize the image to the given width and height
SELECT resize(image, 500, 500) FROM Stream |
Returns a sub image at the given location and the given width and height.
SELECT sub(image, 5, 5, 200, 200) FROM Stream |
Creates a new image with the given width and height
SELECT toImage(500, 500) FROM Stream |
Return the pixel values of the given image as a matrix