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Bug #2059

open

redux display quality

Added by Jim Pulokas about 12 years ago. Updated about 12 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
Start date:
09/21/2012
Due date:
% Done:

0%

Estimated time:
Affected Version:
Appion/Leginon 2.1.0
Show in known bugs:
No
Workaround:

Description

consolidating several similar issues...

Images generated by redux do not have the same quality as phpmrc

A number of reasons for this:

  • order of operations: whether contrast scaling is done before or after resizing the image makes a difference. weather resizing is done before or after the fft makes a difference
  • method of resizing the image makes a difference. phpmrc did binning, which has the desired side effect of low pass filtering. redux does both resampling using scipy and binning.
  • phpmrc did a mysterious low pass filtering which could be set to default, smooth1, smooth2, smooth3. Need to reproduce that, particularly the default, since that was probably the only one ever used.
  • users need good default settings and online help to learn how to adjust the display using redux (adjust.php needs overhaul)

Related issues 3 (0 open3 closed)

Has duplicate Leginon - Bug #1954: Reduc display problem for RCT pairs (?)DuplicateJim Pulokas07/26/2012

Actions
Has duplicate Leginon - Bug #1588: Cronus3 and Longboard not displaying images the same wayDuplicateAnchi Cheng03/14/2012

Actions
Has duplicate Appion - Support #2054: redux config?ClosedAmber Herold09/18/2012

Actions
Actions #1

Updated by Gabriel Lander about 12 years ago

This can be fixed by setting the std to 5 by default instead of 3 in viewer.inc:
$this->autoscale = "s;5";

Actions #2

Updated by Jim Pulokas about 12 years ago

default contrast setting (3 -> 5) has been committed in r17132

Actions #3

Updated by Anchi Cheng about 12 years ago

r17199 change more defaults in 2.2-redux. These affect the makejpg.php caching and download images.

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