How to use the command ppmshift (with examples)
The ppmshift command is used to shift the lines in a PPM image by a randomized amount. This can be done to shift the image either to the left or to the right. The command takes a single argument, s, which specifies the maximum amount of shift allowed.
Use case 1: Shift lines in an image to the left by a randomized amount
Code:
ppmshift -5 path/to/input_file.ppm > path/to/output_file.ppm
Motivation: By using a negative value for the shift amount s, we can shift the lines in the image to the left. This can be useful in scenarios where the image needs to be adjusted to align properly with other images or objects.
Explanation: In this example, the -5 argument is provided as the shift amount s. This means that the lines in the input image will be shifted randomly to the left by a maximum of 5 pixels.
Example output: The lines in the input image will be shifted to the left by a random amount not exceeding 5 pixels, and the resulting image will be saved in the specified output path.
Use case 2: Shift lines in an image to the right by a randomized amount
Code:
ppmshift 8 path/to/input_file.ppm > path/to/output_file.ppm
Motivation: By using a positive value for the shift amount s, we can shift the lines in the image to the right. This can be useful in scenarios where the image needs to be adjusted to align properly with other images or objects.
Explanation: In this example, the 8 argument is provided as the shift amount s. This means that the lines in the input image will be shifted randomly to the right by a maximum of 8 pixels.
Example output: The lines in the input image will be shifted to the right by a random amount not exceeding 8 pixels, and the resulting image will be saved in the specified output path.
Conclusion:
The ppmshift command is a useful tool for shifting lines in PPM images by a randomized amount. Whether it’s for aligning images or creating artistic effects, this command provides a simple and efficient solution.
