cgimage

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How do I blur a CGImage, or UIImageView

I have a UIImageView with a .png inside it. I wa开发者_运维技巧nt to blur the image during runtime. How do I do that?You probably want something like a Gaussian Blur which you can google for loads of[详细]

2022-12-17 10:03 分类：问答
The antialias of rotated CGImage/CGlayer seems jaggy, UIImageView's is not

I need to mask a \"texture\" image with a rotated greyscale image. I found out, that I have to do it with CGImages or CGlayers (if there is a simplier way using UIImageViews only, please let me know[详细]

2022-12-13 07:02 分类：问答
CGImage/UIImage lazily loading on UI thread causes stutter

My program displays a horizontal scrolling surface tiled with UIImageViews from left to right.Code runs on the UI thread to ensure that newly-visible UIImageViews have a freshly loaded UIImage assigne[详细]

2022-12-13 05:57 分类：问答
UIImage within Thread not being Released / Overwritten

This appears to be the the classic method for scanning images from the iPhone. I have a thread that is dispatched from the main thread to go and scan for Codes. It essentially creates a new UIImage ea[详细]

2022-12-09 22:46 分类：问答
CGImageRef and drawing layers

I have this code: CGDataProviderRef provider = CGDataProviderCreateWithFilename([myFile UT开发者_Python百科F8String]);[详细]

2022-12-09 20:02 分类：问答
How do I create a CGImage with RGB data?

Can anyone show me a clear example of how to use CGImageRef CGImageCreate ( size_t width, size_t height,[详细]

2022-12-08 18:50 分类：问答
UIImage Memory problems because of caching

I googled for the memory issue associated with UIImage and came across many threads talking about the problem but no real help or solution.[详细]

2022-12-08 11:02 分类：问答
takepicture() vs UIGetScreenImage()

I\'m trying to build a QRCodeReader for a project our research group is working on for the iPhone. After much research I found the program called QuickMark. This program scans automatically for QRCode[详细]

2022-12-08 02:20 分类：问答