This is one heck of a program, but its hard to learn (with some joyous discoveries en route!). I'm trying to take a folder of images (of various colours) onto a blank (white) canvas without them taking up the colour of the canvas, just retaining their own colours ( but I'd also like to try variations where they might take up colours from a palette). I would prefer to be able to have options of the images as a mosaic on a source image with those images taking up the colours of the source image whilst the images covering the background retain their own (or a palette) colour. Obviously I can take the output into another programme and place the source image onto it, and maybe that's what I will need to do (i.e. treat the source image using the mosaic treatments for separate placement), but I cannot tell how to get Studio Artist to place a folder of images onto a plain background without taking up colour from it.
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Just to be clear. Are you asking how you could generate a tiled mosaic effect where the foreground subject is tiled to represent the colors in the source image at those spatial locations, but the background color for the background tiles is forced to a specific color that is not the background color?
If so, there are different ways you could do that. You could do 2 passes to build up the combined painting. Inhibiting either the foreground or the fixed color background for the second painting pass.
You also ask about painting image tiles where the tiles are laid down not taking any color from the canvas or the source. Sure, you can do that. If you just replace fill with the brush, then the image brush tiles will not be colorized.
Have you looked through the Mosaic categories in the paint synthesizer presets?
Here's a link to some project oriented blog posts. If you click the Mosaics view tag at the top, it will just show posts tagged with a mosaic keyword. There are some posts that talk about tiling. they may be using movie brushes, but what they discuss would also work for image folder brushes in V5.
Many thanks for the link, I’ll work my way through those!
Sorry I wasn’t entirely clear: you’re correct about the foreground; for the background, I want to either 1. Retain the colours of the folder images, 2. Use a different colour. Is it possible to do a mosaic of folder images (again using 1 or 2, above) on just a ‘plain’ background, I.e. not using any source image?
Sure, you can just drop individual images in the image brush in a tiling pattern without any color mapping or colorization of the brush images. In the Brush Source control panel of the paint synthesizer, if you are using a movie brush or an image folder brush, then you have a parameter called MB 1D Frame Mod. MB just refers to movie brush, since historically Studio Artist had movie brushes before image folder brushes. But the Frame modulation works the same way for both, scans individual frames in the movie if a movie brush, scans images in the folder if an image folder brush.
If you use Cycle Fwd for the frame modulation, then the brush will sequentially move through the individual images in the folder. If you use Random, then a random image in the folder will be selected.
RGB Mapping tries to pick the best image to represent the associated source image color where the image is being painted. So don't use that, or others like Luminance (maps best image that represents source luminance) that try to map to the source color.
Many of the factory mosaic presets also have some image brush colorization turned on. Typically that is done using features in the Brush Load control panel. So you could either set the Algorithms in there to None to turn off any colorization, or switch out the Brush Load input in the Paint Fill Setup control panel and use Brush instead. So turn off Fill From Mod (set to None), and set Fill From to Brush Image.
That way the Brush Image will be used for the paint fill, with no colorization processing being done to it.
Thank you very much indeed - that worked really well, and opens up many avenues - looks like I'll be learning/experimenting for a long time to come!