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Kai Zhang 2020-10-16 00:24:18 -04:00 committed by GitHub
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@ -15,7 +15,7 @@ Codebase for arXiv preprint ["NeRF++: Analyzing and Improving Neural Radiance Fi
* Intrinsics and poses are stored as flattened 4x4 matrices (row-major). * Intrinsics and poses are stored as flattened 4x4 matrices (row-major).
* Pixel coordinate of an image's upper-left corner is (column, row)=(0, 0), lower-right corner is (width-1, height-1). * Pixel coordinate of an image's upper-left corner is (column, row)=(0, 0), lower-right corner is (width-1, height-1).
* Poses are camera-to-world, not world-to-camera transformations. * Poses are camera-to-world, not world-to-camera transformations.
* Opencv camera coordinate system is adopted, i.e., x--->right, y--->down, z--->scene. * Opencv camera coordinate system is adopted, i.e., x--->right, y--->down, z--->scene. Similarly, intrinsic matrix also follows Opencv convention.
* To convert camera poses between Opencv and Opengl conventions, the following code snippet can be used for both Opengl2Opencv and Opencv2Opengl. * To convert camera poses between Opencv and Opengl conventions, the following code snippet can be used for both Opengl2Opencv and Opencv2Opengl.
```python ```python
import numpy as np import numpy as np