bytedeco/javacv

Adjust Brightness & Contrast of Frame

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#1,426 opened on May 11, 2020

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Description

Hi, Is there any way to adjust brightness and contrast of the frame grabbed with FFmpegFrameGrabber? I want to adjust the values based on operator input so FFmpegFilter not useful to me. I'm converting the Frame to BufferedImage with convertTo() method, after that trying to change the brightness/contrast of BufferedImage but I think there is an easy way of JavaCV lib...?...

Regards, Osman

Contributor guide

Research direction
Investigate how to apply OpenCV's brightness and contrast adjustment using Core.addWeighted or Mat.convertTo on a JavaCV Frame.
Tech stack
java
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Java
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60