Feature - Add Sepia Filter operator to Augmentation category #129
Description
Is your feature request related to a problem?
ImageLab does not yet support artistic or vintage color effects. Users have no operator to demonstrate color matrix transformations, which are a fundamental concept in image processing.
Describe the solution you'd like
A Sepia Filter operator added to the Augmentation category. It applies a sepia color matrix to the image to produce a warm, brownish vintage tone. An intensity parameter (0–1) controls the strength of the effect: 0 leaves the image unchanged and 1 applies the full sepia transformation, with intermediate values blending between the original and the sepia result.
Additional context
This is useful for teaching color matrix transforms and blending operations: for eg, a user can experiment with different intensity values to understand how cv2.addWeighted blends two images together, making it a natural complement to the other operators in the Augmentation category.