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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When the loop has completed the proper number of iterations the memory is again sampled and the delta is recorded. You’ll need to convet it to another image type, one that playground can handle, to get a UIImage for example that you can see. Fill out the form below and instructions to reset your password will be emailed to you:.
These compression ratios where then run using 1, 2, 14, 20, and 50 executions. We have detected you are using Google Chrome and might be unable to use the Java plugin from this browser. See the gist of the details for each approach.
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. Ivan Sinigaglia 4 8.
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Convert UIImage to/from base64 encoding
Email Please enter a valid email. Out of all the options this is the most straightforward and widely used. Fill out uiiimage form below and reset your password:. If you want to follow along you can create your own Swift Playground using this gist. I am sure there is a ton of optimizations that could be made to bring these numbers down. 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.
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T load “image” to imageView: To make sure we are measure the same resulting data across tests, we record the length of the first Data conversion.
How the Compression ratio impacts memory usage. I was interested to see if there was a memory benefit as well. Sign up or iuimage in Sign up using Google. Now in Swift 4. Post as a guest Name. Nerd Digest Users Other Sites. I test each of the above mentioned approaches using the template outlined below. More info in the Swift Wiki.
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Convert UIImage to NSData or NSData to UIImage
Hardik Thakkar 7, 1 46 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. Desktop Recording Tool All at 0 Cost General Swift Discussion irc. Looking for work or to hire? 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.
Data “NSData” type is converted into “Data” type automatically during ujimage process. Email Required, but never shown. Resources Gist of the Swift Playground is available here Share this: Nerd figure out why Password Password should have minimum 6 characters Please enter password.
Convert UIImage to/from base64 encoding | ios Tutorial
These frequencies demonstrate when image caching and Autorelease Pool strategies start to impact results.