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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Caveats There are more comprehensive approaches out there. Yogendra Singh 6.

Issue with CIFilters in Playground “Failed to convert UIImage to PNG” : swift

See the gist of the details for each approach. After doing this I started seeing memory spikes and leaks appear which got me thinking on how I can better profile different options for performing this conversion. Munkh-Erdene Zorigbold 51 1 2. Hi all, has anyone had success getting CIFilters to work in the latest playgrounds?

Cnovert out the form below and instructions to ulimage your password will be emailed to you:. Manage Company All at 0 Cost That’s of type CIImage.

Hardik Thakkar 7, 1 46 I test each of the above mentioned approaches using the template outlined below. Sign up or log in Sign up using Google. Either enter Content Or Record. Want to add to the discussion?

hiimage Image quality is an important aspect of my projects, so the tests where performed using the compression ratios of 1. I’ve been googling like crazy trying to find anyone else with this issue, but haven’t found anything yet. Post as a guest Name. How often do you convert a UIImage into a Data object? Nerd figure out why. User Name Please enter user name.


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. How the Compression ratio impacts memory usage. When the loop has completed the proper number of iterations the memory is again sampled and the delta is recorded.

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Dedicated to the Swift programming language released by Apple. Unfortunately some of our below listed tools require Java plugin: How do I convert imageData i.

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Nerd figure out why Thanks for the help. You have exceeded the maximum number of characters allowed for a comment without sign in. I settled on the following three approaches.

Look at exclamation point “! I am sure there is a ton of optimizations that could be made to bring these numbers down.


ios – Convert UIImage to NSData and convert back to UIImage in Swift? – Stack Overflow

Looking for work or to hire? The implementation for each approach is slightly different, but the same iteration and compression ratios are used to keep the outcome as comparative as possible. To load “image” to imageView: Have you filed a bug with Apple?

Although the ImageIO strategy was better in a single execution scenario I question if the proper handling uiomage image orientation would reduce or uoimage any of your memory savings.

Now in Swift 4. Email Please enter a valid email. Test Results Below is the result broken down by iteration. Yea that does the job. If so link me to your report and I will star it. UI Design and UX.

Most Viewed Most Recent Converted to Swift 3 and worked To save: This makes testing much easier. To save as data: I will do so after this comment.

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