![]() ![]() How MRC impacts your app Enabling MRC in your appīy default, an app doesn't have to do anything to enable users to take mixed reality captures. You can use MRC to demo your app, educate users, encourage users to share their mixed world interactions, and for user research and problem solving. Whether it's mixed reality screenshots on your Microsoft Store page or other users sharing capture content on social networks, Mixed Reality Capture media is often a users first exposure to your app. MRC on HoloLens (first-generation) supports videos and photos up to 720p, while MRC on HoloLens 2 supports videos up to 1080p and photos up to 4K resolution. This includes best practices for MRC visual quality and being responsive to system changes while MRCs are being captured.ĭevelopers can also seamlessly integrate mixed reality capture and insertion into their apps. You can take a mixed reality capture (MRC) photo or video at any time, but there are few things to keep in mind when developing your application. 04.See Render from the PV camera below for guidance on a new MRC capability for HoloLens 2. It will also ask for the ‘jump length’ – the default is 1.0, which is one frame saved for every second of video, 0.5 would be two frames for every second, and so on. By default it creates a folder in the same place as the video. When you import the video in Reality Capture it will ask for a place to save frames from the video. Try to keep your movement smooth to avoid motion blur. You need to make sure that it’s high quality and that you cover every part of the object. Instead of shooting photos you may want to consider shooting a video. If this will be used further back in the distance you may not need fine detail at all. If you’re scanning a large rock wall like in this tutorial you probably won’t need fine detail well over the character’s height. Keep in mind the scale of the object in your 3D scene. ![]() Then, raise the camera up or down and repeat until you have a grid of overlapping images covering every part of the object.Īfter you’ve shot the general images you can move the camera in close to get extra details in a specific area. A good technique is to shoot one, then take one step to the side, shoot again, another step to the side, etc until you get around the object or to the end of it. You’ll need at least two shots of every angle, one slightly offset from the other, and they should have at least 30 per cent overlap between them. Ideally you’ll want to shoot as many pictures as you can, the more the better, but don’t just go shooting willy nilly. The more random details the object has, the better. Also keep in mind that photogrammetry doesn’t work well with objects that are transparent, shiny or smooth with little detail. ![]() Choose a day when it’s overcast but not raining. If you’re shooting outdoors you don’t have a lot of control over the lighting and shadows, and that is important because they will appear in your final texture and probably won’t match the lighting in your 3D scene. It can also help to use a longer lens, either in your phone or other camera to avoid distortion. The main things that matter are getting the highest resolution you can and making the pictures as sharp as possible. For your camera you could choose a high-end DSLR or mirrorless camera, but you can also just use your smartphone’s camera. When shooting pictures for photogrammetry like we’re doing today, you don’t really need any special equipment, but there are some things you should keep in mind. ![]()
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