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Bug #4885

closed

Redux image quality is poor / produces artifacts in imageviewer.php

Added by Neil Voss over 7 years ago. Updated about 7 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Anchi Cheng
Category:
-
Target version:
Appion - Appion/Leginon 3.3
Start date:
04/05/2017
Due date:
% Done:

0%

Estimated time:
Affected Version:
Appion/Leginon 3.2
Show in known bugs:
No
Workaround:

Description

When the image viewer was originally created it was taking images from 4096 to 512, which is integer scaling. With newer EM camera the scaling has become a float and introduce artifacts.

Two things I noticed to fix this:
  • scale by float then integer could help.
  • use bilinear scaling rather than default bicubic

Files

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old_method.jpg (130 KB) old_method.jpg Neil Voss, 04/05/2017 12:09 AM
new_method.jpg (128 KB) new_method.jpg Neil Voss, 04/05/2017 12:09 AM
redux_testing.png (172 KB) redux_testing.png Neil Voss, 04/05/2017 07:51 AM
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