Compare
The compare operation reports the difference between two images and generates an output image highlighting the differences between the two. For details of the values returned from this function, see compare operation results.
Properties
Reference image
Path to the reference image which is used as a basis for the comparison.
Comparison image
Path to the image to be compared against the reference image.
Comparison metric
The function used to quantify the difference between the two images:
- Mean absolute error
- Mean square error
- Peak absolute error
- Peak signal-to-noise ratio
- Root mean square error
Save annotated image
When checked, a new image will be created, highlighting the differences between the reference and comparison images.
Highlight style
The method used to highlight differences in the annotated image.
- Assign
Assign the highlight colour to each differing pixel. - Threshold
Creates a black and white image, indicating the different areas. - Tint
Apply a tint to the different areas based on the highlight colour. - XOR
Mix the highlight colour and original colours using a bitwise XOR operation.
Highlight colour
The colour used to highlight differences in the annotated image.
Output file
Path to save the annotated image to.
Timeout
Timeout in seconds.
Definition
Compare Operation Results
- Difference Metric
The result of the comparison metric for the entire image. - Absolute
The absolute value of the comparison metric result. - Normalised
The same result normalized against image size and colour depth.