Feature request: Adjust brightness and contrast of images

[moi90]

Sometimes, images are easier to annotate if their contrast is stretched (for example). However, this currently requires altering the image file.

I propose a small UI to change brightness and contrast of the displayed images. This can be purely done with JS and CSS:

https://www.w3schools.com/cssref/css3_pr_filter.php

If you point me in the right direction, I might start working on it.

[moi90]

I created a fiddle to show the functionality:

https://jsfiddle.net/6qmpt40n/23/

As EcoTaxa already uses JQuery, it should be easy to include this.

[grololo06]

As all images in a page are likely to have the same need for improvement (and we have big CPUs nowadays), I think it would make sense to have this globally for all visible objects in a classification page, and with Brightness/Contrast controls always visible. Users won't bother clicking a button then adjusting then closing.

[moi90]

I think it would make sense to have this globally for all visible objects in a classification page

Yes, exactly what I was thinking! (Not for each individual object, that would be stupid.)

with Brightness/Contrast controls always visible. Users won't bother clicking a button then adjusting then closing.

Is there enough space on the screen? It could also be a menu (that opens on hover) with the sliders. Or two simple dropdowns (analogous to, and next to, the magnification dropdown). The nice thing about the sliders is that the effect on the images is instant, while dragging.

[bea777515]

Closed -> moved on clickup - will be a feature of the new classification page (similar but tailwindcss - vanilla js) , interactions to be clarified

[moi90]

Great that you will be working on it! Is the Clickup publicly viewable? (Otherwise, it might make sense to keep this issue open until the feature is actually implemented.)

[bea777515]

re-opened , ideas about the controls and interactions can be clarified here

[bea777515]

I am closing all the issues , and moving them to clickup , except those to be clarified , and, you are right, this one should stay here to add ideas about the UI