Auto Adjust Contrast

Public technical reference documentation from Graiphic. For current SOTA installation and toolkit guides, visit the documentation center.

Description

Boosts contrast based on the image’s histogram to improve normalization and line detection in varying lighting conditions. Type : polymorphic.

Documentation illustration (illustration unavailable in the archive).

Input parameters

Documentation illustration (illustration unavailable in the archive). Image Src : class, type accepted U8, RGB and HSL.
Documentation illustration (illustration unavailable in the archive). Mode : integer, specifies the auto-tuning method :

- Contrast Stretching : Adjusts extreme pixel values to utilize the full grayscale range, enhancing overall contrast.
- Histogram Equalization : Evenly distributes pixel intensities across the entire histogram, improving contrast, especially in concentrated areas.
- Adaptive Equalization : Applies histogram equalization in blocks to handle local contrast variations, reducing noise amplification.

Output parameters

Documentation illustration (illustration unavailable in the archive). Image Dst : class

Examples

All these examples are snippets PNG, you can drop these Snippet onto the block diagram and get the depicted code added to your VI (Do not forget to install Computer Vision library to run it).