Swap With

Would be nice to have a swap with module, to replace one color with another easily, i know it's most likely already possible, but im there should be simple solutions, mainly so it's as simple as dragging a module into a structure rather than having to look through the library for an example, resize is another essential imo.

Yeah i mean that say if you had a white circle but water in the background, and you wanted to switch the white for another color, you would choose white for the color that you want to change, then there would be another color selector and you change that to red and then the circle would become a red circle.

James,

I was wondering how your idea would look as a filter, so I made one. It turned out a little more complex than I thought...
I was thinking of maybe submitting it to the library. Would you mind at all? (I'd mention your name in the description, if I did, BTW.)

Color Swapper i1i.ffxml

Thanks, Kreallin.

I’m not exactly sure what you mean by “color ranges to swap".

If you’re just talking about the Color to Change range, this can be adjusted by the Tolerance slider. In the filter, I used the RGB channels, because I liked it’s effects, but I could also have just as easily used the extract/assemble HLS channels instead. Plus, I could also have given Tolerance sliders for each channel individually too (for more selective control).

Meanwhile if your asking about a range of new colors (to replace the old ones), this could probably be done by using a gradient, instead of just one New Color. And then using that gradient to color the elevation of the Color to Change masked areas somehow…(?)


However, I do sort of like the simplicity that the filter has so far -- and I’ve been surprised at what it can do to some images (as I explored Next Variant -- something PSP’s "Color Replacer" and "Change to Target" tools don’t have). I was thinking of adding an Invert Mask box, though…

In any case, I always like feedback. And if I don’t make the changes you or anyone else thinks up, others are more than welcome to modify away!

I think such a filter is possible, where my ideas above might be used -- where the HLS extract/assemble components would be used and you'd use a different type of curve for the Tolerance sliders (i.e. range of HLS parts to Change), so you could wrap around the hue channel for a better range of reds (i.e. something like in Richard Bartlett's Color Isolate filter).
I'm not exactly sure how the range of new colors would work -- but you could probably use a gradient (mapped to elevations of the masked HLS channels) with various gradient controls for the user to adjust...

In any case, I'm pretty preoccupied with other projects at the moment, so I don't have time to really figure it out now...

vlad, that one is similar to 'color isolate'. but would work fine if used in plugin mode. you could just fill in the transparencies in the editor. also, you need an invert alpha there

also, it would be slick if you could do a cross-hue range, like select blue to red and replace those with yellow to green hues.

color swapping and color extraction is a HUGE need for folks in the graphic arts, retouching, restoring industry. i know. i see this request all the time on retouchpro, especially object extraction. that was the reason i made a request for a color isolater a while back. edge finding combined with extraction tools are in big demand. paint shop pro and photoshop both need more work in this area.

and this goes back to our converasation about spectrum type computers as opposed to digital. so, i wont re-hash that all over again

paint shop pro does have some decent tools for extractions but it's often very fickle depending on the type of image. and i see folks using photoshop having troubles as well. so, i've been playing around with this from time to time in FF. still nothing i'm really pleased with yet.

there is a russian company that has been advertising on retouchpro and they have a couple of products that work fairly well. the one i remember is gml growcut. it does a pretty good job and they have another out, in the software forum, that uses a similar method. and it's currently free.

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Kraellin wrote: also, it would be slick if you could do a cross-hue range, like select blue to red and replace those with yellow to green hues.

Photoshop's Hue/Saturation adjustment does this since version 4, if memory serves.

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Kraellin wrote: i see this request all the time on retouchpro, especially object extraction.

Photoshop already has Background Eraser (works wonders in simple cases), the Extract filter (a bit hard to figure out, requires some learning), and the Magnetic Lasso which is a fantastic tool (having spent a couple of years extracting fluffy objects from photos using the old polygonal lasso, I can say that with full confidence