Sony patents method to cut 3D Gaussian splat file size by half
Sony has patented a way to shrink the file size of 3D Gaussian splats, a technique used to store complex 3D scenes. The method converts the color data into a format that separates brightness from color, then removes the extra color details that are hard for the human eye to notice. This reduces the memory needed to store these 3D objects by about 50%.
In the filing’s own words
Techniques to handle the Spherical Harmonic (SH) coefficients associated with 3DGS towards effective compression are described herein. SH coefficients are used to represent view dependent RGB color values, which takes a significant amount of memory—48 out of 59 parameters per Gaussian. By applying suitable transformation to SH coefficients, the inter-channel redundancies are exploited, thereby effectively reducing the memory requirements by 50%.
What exactly they claim (claim 1)
1. A method comprising: applying a color space transform to Spherical Harmonic (SH) coefficients of a Gaussian splat; calculating view-dependent YUV components using the transformed SH coefficients; and eliminating redundant SH coefficients, wherein eliminating the redundant SH coefficients includes retaining base colors, retaining the SH coefficients for the Luma (Y) component, but eliminating the SH coefficients for the Chroma (U and V) component.
Facts
- Company
- Sony (SONY GROUP CORPORATION)
- Official title
- Decorrelation of spherical harmonic coefficients towards efficient compression of 3D Gaussian splats
- Patent number
- US12762748B2
- Application number
- 19020926
- Filed
- Jan 14, 2025
- Granted
- Oct 13, 2026
- Inventors
- 4
- Claims
- 21
Classified under
G06T 9/00 Physics & computingG06T 15/20 Physics & computingH04N 9/67 Electricity & electronicsH04N 19/20 Electricity & electronicsMore from Sony in AR, VR & displays
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.