With the help of GSVPanoDepth.js (see previous post), I have created HyperlapseMB, a fork of Hyperlapse.js that uses the depth information to create a nice motion blur effect. The images are filtered as a pre-processing step before the hyperlapse is played. The algorithm is similar to the technique used as post-processing effect in video gamesContinue reading “HyperlapseMB: Hyperlapse.js with Motion Blur”
Tag Archives: graphics
Extract depth maps from Google Street View
Besides high-resolution images, Google Street View also provides a depth map for each panorama, containing the distance from the camera to the nearest surface at each pixel. As far as I know, there is no official documentation of the format, but there are some open source projects which contain code showing how to interpret theContinue reading “Extract depth maps from Google Street View”
Ray Marching Signed Distance Fields
This is my first attempt in real-time rendering of a procedurally generated terrain: The terrain is generated from 3D Perlin Noise. It is converted to a signed distance field using Danielsson’s distance transform and stored in a 3D texture of size 256x256x256 on the GPU. The scene is rendered directly from the distance field, applyingContinue reading “Ray Marching Signed Distance Fields”
Third-Order Texture Filtering using Linear Interpolation
A straightfoward implementation of bi- or tricubic texture filtering requires lots of texture lookups. As texture lookups are slow on current graphics hardware, reducing their number greatly improves the performance of high-order filtering kernels. In contrast, linear interpolation is relatively cheap as it is supported by the hardware. This fact has been exploited by SiggContinue reading “Third-Order Texture Filtering using Linear Interpolation”
0xef 