If we use a HDRi as background image must be of good quality (good resolution in pixels) and put the camera in the correct position for the models that are in the scene look as if they really were on the floor.
The steps are:
1. Load the HDRi in a slot
Create a map VRayHDRi
Load at him HDRi high resolution
2. VRayHDRI in Environment Map
Drag VRayHDRI to the Environment Map
3. Camera Location
Create VRayPhysicalCamera on the scene and put in the coordinates 0, 0, 0
4. Display the HDRi in Viewport
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At the Viewport menu, go to Viewport Background > Background Environment, will be displayed in the viewport the image of HDRi
View from VRayPhysicalCamera
Please note that from now to change the angle of vision so you just move the VRayCamera.Target, the camera must always be in X: 0cm, Y: 0cm and Z: 120cm.
5. Proper camera position
Creates models on the scene
Select the camera and change its position Z to 122cms. This measurement is the exact position of the SLR camera from which the photos were taken to create the HDR.
6. Flooring and lighting LightDome
I added a LightDome on the scene and has the same texture as the HDRi Environment.
I also added a flat floor, and put the following material is to only see the shadows of the models.
7. Final Render
The correct location of the models on the floor looks.
If you have any questions please leave a comment
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