Yalantis/uCrop

Bug: Image seem very blurry even though it has very high resolution

Open

#466 opened on Oct 26, 2018

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 (10 comments) (0 reactions) (0 assignees)Java (11,748 stars) (2,134 forks)batch import
help wanted

Description

If you take an image with large resolution, and you zoom in, it becomes very blurry, even though it has the needed details.

Take this image for example:

original.zip

If you zoom in, you see less details than if you open the same file on a Gallery app. In fact, in the sample, I can't zoom in enough...

Contributor guide

Tech stack
java
Domain
mobile
Issue type
bug
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.
mostly clear
Prerequisites
Android developmentBitmap basicsuCrop libraryZoom implementation
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Investigate how uCrop loads and displays images, particularly the zoom functionality. Check the ImageView subclass used for cropping. Look for downsampling or bitmap caching that might cause loss of detail. Review comments in the issue for any suggested approaches. Test with the provided image to reproduce the blurriness.