Bug 302946 - Add 'colors' composite histogram to Adjust Curves tool [patch]
Summary: Add 'colors' composite histogram to Adjust Curves tool [patch]
Status: CONFIRMED
Alias: None
Product: digikam
Classification: Applications
Component: Plugin-Editor-Curves (show other bugs)
Version: 2.6.0
Platform: unspecified Linux
: NOR wishlist
Target Milestone: ---
Assignee: Digikam Developers
URL:
Keywords: junior-jobs
Depends on:
Blocks:
 
Reported: 2012-07-03 08:03 UTC by Dik Takken
Modified: 2019-04-26 20:51 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:

Attachments
Adds colors histogram channel in the list. (4.45 KB, patch)
2019-03-16 14:17 UTC, Sambhav Dusad 		Details
Adds colors histogram channel (2.69 KB, patch)
2019-03-20 12:55 UTC, Sambhav Dusad 		Details
Show Obsolete (1) View All Add an attachment

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Description Dik Takken 2012-07-03 08:03:56 UTC 
The histogram in the side panel of the editor features a very useful composite view, which shows all three color components on top of each other. Unfortunately, the Adjust Curves tool lacks this view.

When adjusting curves, it is critical to carefully watch the color channels, because the lumunance histogram does not always show it when a specific channel is damaged by truncating pixel values. You need to look at the color channel histograms to see this. For this reason, I think a composite view is a very important asset for the Adjust Curves tool.

Reproducible: Always
Comment 1 Sambhav Dusad 2019-03-16 14:17:17 UTC 
Created attachment 118839 [details]
Adds colors histogram channel in the list.

But when the user clicks on colors curve, digiKam crashes.

Thanks
Comment 2 Sambhav Dusad 2019-03-20 12:55:25 UTC 
Created attachment 118933 [details]
Adds colors histogram channel