Bug 302946

Summary:	Add 'colors' composite histogram to Adjust Curves tool [patch]
Product:	[Applications] digikam	Reporter:	Dik Takken <kde>
Component:	Plugin-Editor-Curves	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	CONFIRMED ---
Severity:	wishlist	CC:	caulier.gilles, metzpinguin, sambhavdusad24
Priority:	NOR	Keywords:	junior-jobs
Version First Reported In:	2.6.0
Target Milestone:	---
Platform:	unspecified
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Adds colors histogram channel in the list. Adds colors histogram channel

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