bytedeco/javacv

How to add transpranet background overlay on image (IplImage)

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#306 opened on Jan 9, 2016

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Description

Hi

@saudet , I try to add an overlay on iplimage, but I find overlay's background are black...

Any idea on how to solve this?

Contributor guide

Research direction
Investigate how to overlay images with transparency using OpenCV's alpha blending functions (e.g., cvAddWeighted) in the context of javacv's IplImage. Check documentation and examples for overlaying an image with an alpha channel.
Tech stack
java
Domain
computer vision
Issue type
Research
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.
70