Transforms Flashcards
1
Q
Want to make image brighter.
A
Add constant.
2
Q
Want to make image darker.
A
Subtract constant.
3
Q
Increase contrast in image.
A
Multiply by constant. Higher slope in intenity transfer.
4
Q
Inverse transform.
A
Max intesity value - pixel value
5
Q
Gamma transformation.
A
Transformation ”bendy” intensity function.
Gamma < 1 lightens
Gamma > 1 darkens
6
Q
Log transformation.
A
Visualises brigter regions in dark regions.
7
Q
Histogram
A
Shows pixels with specific value.
8
Q
Histogram thresholding
A
Image with nice peaks (bimodal) —> separate background and object.
9
Q
Histogram equalization
A
Flattening the histogram by distributing the intensity values.
