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I have searched the web high and low and found some examples which lets you extract out one color and make it transparent for an image i.e. background color. This was done with methods like CGImageCreateWithMaskingColors. What I'm trying to do is the opposite though. I want to extract out all colors from an image except for one color. Is that possible, and how?
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How can I split the objects/blobs on an image with transparent background and save them as separate images with ImageMagick?
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Is it possible to change the shape of the UIView from rectangular
to triangular in Xcode 5?
I imagine you mean interface builder? No. You can do it a few ways in code. Override drawInRect (preferred) OR create the view on photoshop (quick and dirty) and bring it as an image. Then set the background as clear and add the imageview to it.
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Is there any possible to customize a view which it's frame is a polygon(such as a triangle) instead of a regular rectangle? (not just "draw" a polygon shape with CG)
Thanks.
No, all views in iOS have a rectangular frame.
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So, my background is in the color #DBDBDB. I need an animated loading image like this one for my site's background. Unfortunately since GIFs don't support partial transparency, I'm left with a white outline in my background. I've tried to take this image and edit it to use the same background color to no avail. Then I tried to make a loading animation of my own but that came out horrible. So I do not know what to do. Can anyone help me? I would like to use this image but instead of a white outline, I would like an outline in the color #DBDBDB or a background #DBDBDB
Or to be told how to do this in CS5.5
You can use the wonderful little service AjaxLoad to generate a loading animation for any combination of colors. Just pick #DBDBDB as the background color and use "Indicator Big" as your style.
Here's your image:
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I have an iphone app with a picture of a face in the uiimage. I want to only change the eye color on the face by tapping on a button or tapping on a color wheel. Can you give me some help in what code I would need.
I would suggest taking a look at OpenCV. It works quite well on iOS devices, the main code comes with examples on how to build iOS applications and there is a lot of material on how to do eye detection and from there you should be able to change the colors.
Keep in mind this is not a simple task and you could accomplish with a easier thing. But you could learn a lot and there are tons of good resources around this topics.
If you want to do something faster, you might be able to just detect the touch on the UIView(enable user interaction) and present a color picker, after the color has been presented you could create a simple view on top of the image that has a circle with the color that was selected. It would be crappy, but might be a good idea to do a simple simple prototype.