Hi all, has anyone had success getting CIFilters to work in the latest playgrounds ? It keeps throwing me a “Failed to convert UIImage to PNG”. You can store a UIImage (or an NSImage on Mac) as raw data. This can be useful if you’d like to save it in Core Data. Here’s how you convert a. Hi all,to convert uiimage to nsdataobjective cnsdata *data = uiimagepngrepresentation();swiftlet imagedata: nsdata.
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How often do you convert a UIImage into a Data object? At the top of the method a memory sample is taken The helper method for converting a UIImage to a Data object is called in a loop.
How do I convert imageData i. Email Required, but never shown. Hi all, has anyone had success getting CIFilters to work in the ro playgrounds? These compression ratios where then run using 1, 2, 14, 20, and 50 executions. To save as data: Do they do public bug tracking? I am sure there is a ton of optimizations that could be made to bring these numbers down.
Sign uoimage or log in Sign up using Google. Submit a new post. Test Results Below is the result broken down by iteration. For this example we just use Top, Left. You’ll need to convert it to another image type, one that playground can handle, to get a UIImage for example that you can see.
This is just an experiment using Playgrounds and basic memory sampling. Out of all the options this is the most straightforward and widely used.
How the Compression ratio impacts memory usage. Yea that does the job. Looking for work or to hire? This makes testing much easier.
Swift: Convert between CGImage, CIImage and UIImage – Hawk Wiki
Email Please enter a valid email. Testing Each Approach I test each of the above mentioned approaches using the template outlined below. To confert “image” to imageView: There is more work to be done on why the compression ratio has an inconsistent impact, my guess is this is a result to caching within the test.
See the gist of the details for each approach. Want to add to the discussion? Testing Scenarios For my scenarios it was important to understand how memory is impacted based on the following: Ivan Sinigaglia 4 8. That’s of type CIImage.
Convert UIImage to NSData or NSData to UIImage
There is some variability on how each approach is tested. Starting with Version 42 released AprilChrome has disabled the standard way in which browsers support plugins. After doing this Uiimafe started seeing memory spikes and leaks appear which got me thinking on how I can better profile different options for performing this conversion.
Converted to Swift 3 and worked To save: General Swift Discussion irc.