Use of Z-order data in an image sensor
US8306337B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2009 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Jul 15, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/611
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods are provided for detecting objects of an object class, such as faces, in an image sensor. In some embodiments, the image sensor can include a detector with an image buffer. The image buffer can store image data in raster order. The detector can read the data out in Z order to perform object detection. The image data can then compute feature responses using the Z-ordered image data and determine whether any objects of the object class are present based on the feature responses. In some embodiments, the detector can downscale the image data while the object detection is performed and use the downscaled image data to continue the detection process. In some embodiments, the image data can perform detection even if the image is rotated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.