Firstly I'm sure this question must have been asked before but I am unable to find a suitable answer. I wish to recolour a bw tiff in InDesign so that the grey channel within the tiff shows as white/paper, and the white areas of the tiff are transparent, allowing me to overlay a white image of the greyscale tiff on top another image, texture, gradient or graphic pattern. This is a quick and simple process in Quark Xpress but Indesign doesn't seem to have this capability. Can anybody help?
e.g. I have a black and white tiff of a logo and I wish to reverse this out of a photograph. In Quark Xpress I would change the image colour to 'white', the box colour to 'none' and the image background colour to 'none'. Simple.
Either select the image with the direct select tool so youhave the image itself, not the frame, selected and choose Papaer for the fill, OR just drag the Paper swatch from the panel and drop it on the image.
Not that images with transparency CANNOT be colorized this way.
Hi Peter, thanks for your help. I am able to change the colour of the image as described. My problem is that when an image colour is 'paper' it is the same 'paper' colour as the background of the image, so you have an white/paper image on a white/paper background. I would like the background of the image to be transparent, not white, but still showing the image as white. So that, as described initially, I would be able to see the next object below through the white image.
If images with transparency cannot be colorized this way, how would I be able to work around this? As stated earlier it is such an easy process in Quark Xpress that I am surprised that it isn't possible in InDesign.
When the frame fill is 'none', the background of the image remains white, so when you change the image colour to white you get a white image on a white background within a clear box. Colouring the frame fill as any colour other than 'none' does change the colour of the image background, but you cannot change the image background to 'none' as far as I can see.
I tried that. I thought the Alpha channel would be a good option as it would retain the tonal variations of the image but InDesign must see it as a multichanel image i.e. not greyscale, as I as was unable to colorize the image when I did this. A clipping path would work but it would only give me an edge, not the transparency within the image I'm looking for. I appreciate your time and help with this.
Using that as an example, I would like to be able to colour the dark green areas as white ('the image colour'), the white areas as transparent ('the image background colour) and the cyan background would be 'none' (frame fill) so as to show objects below.
Yeah, I don't think that's going to work from a grayscale. I was palying around a bit with no clipping path and blending modes to drop out the background, but if everything is white there's not much you can do.
Thanks for trying. There are many elements of InDesign that are much better than Quark Xpress but this is a simple little trick that could be achieved with the click of a mouse and it is disappointing that it can't be done. There are alternative techniques to achieve transparency effects: blending modes etc., so I guess we'll just adjust accordingly. Thank you for your time.
I found a method that works on a 0/0/0/100 background (just stumbled into it and it isn't intuitive).
Fill the frame with Paper and the image with Black, then set BOTH the frame and the image to Difference in the Effects panel.
The white frame edge seems to be a display anomaly in ID -- it isn't present inthe PDF I exported -- and even better, I just discovered this seems to work on many other background colors, too (though not all) if you set the image fill to the same color as the background.
Thanks again. I've been able to get the effect of having a white image reversed out of a solid colour no problem - without playing around with the blending. Its just making the image transparent that is the issue e.g if you were to make the fill of the frame into a gradient instead of a flat colour the image whites out, as it does if you set the frame fill to none to overlay the image over other elements on the page.