![]() You use this preview layer in conjunction with an AV capture session to display video. This can be done using an AVCaptureVideoPreviewLayer, which actually is a CALayer. Now that we have set and configured an AVCaptureMetadataOutput object, we need to display the video captured by the device’s camera on screen. The metadataObjectTypes property is also quite important as this is the point where we tell the app what kind of metadata we are interested in. So, we use DispatchQueue.main to get the default serial queue. According to Apple’s documentation, the queue must be a serial queue. A dispatch queue can be either serial or concurrent. In the above code, we specify the dispatch queue on which to execute the delegate’s methods. When new metadata objects are captured, they are forwarded to the delegate object for further processing. For now, continue to add the following lines of code in the do block of the viewDidLoad method:ĬaptureMetadataOutput. This class, in combination with the AVCaptureMetadataOutputObjectsDelegate protocol, is used to intercept any metadata found in the input device (the QR code captured by the device’s camera) and translate it to a human-readable format.ĭon’t worry if something sounds weird or if you don’t totally understand it right now – everything will become clear in a while. The AVCaptureMetaDataOutput class is the core part of QR code reading. In this case, the output of the session is set to an AVCaptureMetaDataOutput object. The AVCaptureSession object is used to coordinate the flow of data from the video input device to our output. To perform a real-time capture, we use the AVCaptureSession object and add the input of the video capture device. In the code above, we specify to retrieve the device that supports the media type. If you want a brief peek at what’s in the tutorial, you can take a look at our teaser here.Assuming you’ve read the previous chapter, you should know that the AVCaptureDevice.DiscoverySession class is designed to find all available capture devices matching a specific device type. ![]() ![]() So, if you want your renders to look more photorealistic, we highly recommend checking out Otoy’s Daz Octane plugin and tutorial. Lighting tweaks, special effects, twinkles, the possibilities are endless. To finish up, we cover post processing in Octane. And, he modifies the hem of the dress to make it appear more ragged or torn… all in Octane! The viewer will understand why and how John adapted the nodes and maps. What ends up looking like a spaghetti map, is totally legible, but better: logical. Starting with a simple explanation of node editing and then building on it, piece by piece. It’s at this point that we bring them back. You’ll either believe it’s real, or not.”Īt this point, we’ve replaced the Daz Vendor supplied materials. Tweaking the lights, refining the intensity, position, color… as John says, “lighting can make or break a scene. Next, we add a couple of primitive spheres in the Daz scene to act as emissive light sources in Octane, and here it’s worth pointing out that these are the ONLY changes that we make to the Daz scene actually IN Daz. In a few short moments, we’ve transformed the Daz scene into something completely different from what the out of the box render looked like. Then we examine the massive photorealistic material library that comes with Octane, its real strength. Then, we add an HDRI image for lighting and adjust the angle of the sun in real time, as well as adding an Octane camera, also making adjustments to the camera, just as a real-world photographer would. He starts with an Out of the Box render, without any changes for a baseline for comparison. John starts by opening a single scene in Daz Studio and then by making changes mostly in Octane he demonstrates how the user can see changes, virtually immediately. This, coupled with the massive photorealistic texture library that is available to anyone with the plugin, creates one of the best render engines on the market. The strength of Octane is the ease with which it mimics real-world photographic and cinematic terminology, which means that anyone that understand these real-world disciplines can easily utilize their knowledge to make use of Octane to create very realistic renders. If you are an artist looking for photorealism, this is the tutorial for you!įor those of you that are unaware, the Daz Studio Octane plugin is a unique and powerful render plugin that is used by many of the major players in the entertainment industry because its ability to work within a variety of platforms that include Cinema 4D®, 3ds Max®, AutoCAD®, Blender® and Lightwave® to name just a few. John Kent, who has been a Daz Studio Octane plugin user and real-world photographer, takes the student from simple to more and more complex scenes cohesively building on previous knowledge. ![]() Fueling Your Renders with Octane is a two part tutorial with a total running time of about 104 minutes.
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