bytedeco/javacv

Image colors getting inverted by leptonica converter

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#1,136 opened on Feb 6, 2019

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bughelp wanted

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Description

I am using LeptonicaFrameConverter c = new LeptonicaFrameConverter(); Frame f = c.convert(src); BufferedImage img = Java2DFrameUtils.toBufferedImage(f); But the output image has inverted colors, ie 1->0 and vice versa. using it for .tiff format. How can I resole this? TIA.

Contributor guide

Research direction
Investigate the LeptonicaFrameConverter source code to locate where color inversion may be introduced (e.g., bit flipping or wrong color space conversion). Check if the issue is related to binary images or specific TIFF options.
Tech stack
java
Domain
computer graphics
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
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