How to Upload 360 Picture to Blender

April 11, 2022 Post a Comment

Blender Tutorial: How to Render a 3D VR Video from Blender

28 Jun , 2018 Academy VeeR VR

Could VR requite more realistic experiences? If yes, how? Those are questions every VR creator has been working on. The highest grade of immersive media gives its viewers the feeling that they are viewing the scenes in person and direct with their ain eyes. Nosotros perceive the real worlds around us with two eyes that are 2~3 inches apart. Any object nosotros look at, its image gets projected on our left and right center retinas at slightly dissimilar positions, and such binocular disparity helps u.s.a. perceive the scale and the depth; the larger the disparity is, the closer we feel the object is to u.s.a. (depth). For a certain perceived size, the further away the object is from us, the larger we know it actually is (scale).

When nosotros watch contents in VR mode, VR goggles or VR headsets employ ii split up input channels for each of our eyes and thus 'immerse' us into the scene. If the content is in 2D, the system automatically generates ii scenes onto two display screens so that the left display presents a fraction of the scene slightly more on the right than the right display does.

the left display presents a fraction of the scene slightly more on the left than the correct display

In contrast, 3D is produced by using 2 cameras offsetted from each other to capture materials with different binocular disparity for each centre and can thus give viewers a much more real sense of depth and scale. And then this Blender tutorial volition walk you through how y'all can use a pair of virtual cameras to return a piece of 3D VR content with Blender.

Blender project: Thanksgiving Parade | 360 Video by Tate

Assuming you've got your 3D scene ready, here is a brief summary of the workflow we'd adopted:

1. Configuring the return engine

Change the return engine to 'Cycles Render.'
Gear up the output format.

2. Set the stereo 3D brandish manner

3. Configure the photographic camera

Change the camera type to a 360-degree ane
Make your camera a stereo pair
Set the interocular distance
Consider where the convergence plane should be
Set the convergence plane distance and finalize the position of the stereo pairs

4. Return the scene out and upload onto VeeR!

Blender project: Lowpoly Japanese Garden 360 in 4k by Dominik Kozuch

Step 1: Configure the return engine

Beginning, set the render engine from 'Blender Render' to 'Cycles Render': for various reasons this new engine is much more powerful in rendering photorealistic 3D scenes than the classic one. Go to 'render layers' on the properties panel, bank check 'views,' select 'Stereo 3D,' and then bank check both left and right.

Then click on the photographic camera icon and become to 'output.' Choose a destination binder. If your last product is a withal 3D image, select an epitome format. If you are making an blitheness, you can consign it in a video format or consign individual frames as images. The first option is easier but also a piddling flake risky because you'd lose the whole render if some error happens half way. Images crave yous to do more legwork to bring together the images although it's safer. Knowing that, nether 'Views Format,' select 'Stereo 3D.'

Moving on to fix the output format – because our final product would be two renders – i for each eye, we'll need to decide on what layout the two renders should be present in. Because nosotros are rendering for VR, we'd choose some format that presents the renders for two eyes in parallel and without overlapping with each other. Thus, you tin can choose Stereo Manner equally either 'Superlative-Bottom' or 'Side-by-Side.' Platforms like VeeR recognizes the acme/left render as the left eye input channel and the bottom/right render as the correct middle input channel.

Pace 2: Fix the stereo 3D display mode

However, you don't usually utilize a VR headset to preview the scene when you are creating information technology, and so you tin can click on 'Window' > 'Stereo 3D,' and select 'Anaglyph' to preview your work. An anaglyph 3D video contains 2 differently filtered colored videos (overlapping with each other), one for each eye, and y'all can watch information technology by wearing a pair of red-cyan glasses then each of your optics just sees a single image, like you practice when watching a 3D picture in the cinema.

Stride 3: Configure the photographic camera

Alter your camera type to 'panorama,' and then 'equirectangular,' equally described in this blog. This allows you to have your return results in 360-degree.

Then, select your camera, go to 'data' in the holding console, and go down the 'Stereoscopy.' Select 'Off-Axis' under Stereoscopy: this is the ideal format since it is the one closest to how the human vision works.

And then we'll need to set the 'Interocular Distance' and the 'Convergence Plane Distance.' You tin can set interocular distance based on how big you lot want your 3D objects to be perceived. Click on one of your objects, press 'Northward' to check its dimensions. Calculate the ratio between the scale that object has in reality over the model's scale. The interocular distance you ready for your stereo pairs should be that ratio times a normal human pupillary distance. Information technology's condom to use Blender's default interocular distance value 6.291 every bit a normal human pupillary distance.

In Blender, the convergence plane is the grey airplane you can see in the 3D viewport later changing the camera to a stereo pair. It's where the two cameras converge. Visual discomfort or encephalon fatigue may easily occur when viewers stare at some virtual object that is too far from the convergence plane yous ready, and a larger distance between the object and the aeroplane the viewers can withstand is associated with smaller interocular distance and larger convergence plane distance. And thus, Blender recommends that you set up your convergence plane distance at least 30 times the interocular distance.

Then far we've got all the parameters covered but oasis't yet decided where exactly we want the camera to be: information technology's still at the default position. To position the camera properly, we'd first consider where we desire the convergence plane to exist. There's no standard reply, so just keep 2 facts in mind:

At that place is only a limited zone around the convergence plane where viewers can look at objects comfortably.
Equally illustrated past the image below, virtual objects that are closer to the camera than the airplane is would have a pop-out upshot(right), while objects that are behind the plane would exist perceived as 'deep into' the screen(left).

Therefore, consider what your main characters/objects are, or, say, where your primary story happens, and drag your camera to movement the convergence aeroplane to that place (the plane moves with the camera given a fixed convergence plane distance). To avoid visual discomfort for viewers, keep in listen: a) where important characters are the densest/where users would focus on for the longest menses of fourth dimension, and b) what objects y'all would similar to use a pop-out result on and what objects you would like a "deep into" effect.

After you reached your perfect position for the convergence plane through moving the photographic camera, press '0' on the Numpad to view from the camera'south perspective. If it doesn't capture all you want, you tin make the convergence plane larger and drag the photographic camera pair further away from the scene to go along the convergence aeroplane at the same position equally before.

Step 4: Return the scene out and upload onto VeeR

So far nosotros've got all the configurations washed. It's recommended that y'all render a piece of low-resolution test to check if the final product is what you want. Afterwards you've got your concluding 3D VR work rendered out, call up to upload it on to VeeR. Only select 3D top-bottom or 3D side-by-side when uploading and VeeR would handle everything else to have your work fix to exist viewed in VR fashion. Nosotros are looking forwards to enjoying your 3D VR content with millions of users on the platform!