Method and apparatus for avoiding non-aligned loads using multiple copies of input data
US10248876B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2016 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Mar 5, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/50
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of determining a summation of pixel characteristics for a rectangular region of a digital image includes determining if a base address for a data element in an integral image buffer is aligned for an SIMD operation by a processor embedded in an electronic assembly configured to perform Haar-like feature calculations. The data element represents a corner of the rectangular region of an integral image. The integral image is a representation of the digital image. The integral image is formed by data elements stored in the integral image buffer. The data element is loaded from the integral image buffer to the processor when the base address is aligned for the SIMD operation. An offset data element of an offset integral image is loaded from an offset integral buffer when the base address is non-aligned for the SIMD operation. The offset data element represents the corner of the rectangular region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.