Episode #297

Drawing on Top of the Video Preview

Series: Camera Capture and Detection

14 minutes
Published on August 11, 2017

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We learn how to convert a CMSampleBuffer into a CIImage and how to set up our CIDetector to detect rectangles. We then draw a box around the detected rectangle and discuss why adding simple subviews won't work with full screen sublayers.

This episode uses Xcode 9.0-beta3, Swift 4.