All-focused image generation method, device for same, and recording medium for same, and object height data acquisition method, device for same, and recording medium for same
US9262836B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 11, 2012 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Feb 14, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20221
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An all-focused image generation method comprises the steps (i) to (vi). The step (i) is a step of taking L images of an object at different focal positions. The step (ii) is a step of acquiring gray scale images of the object at the respective focal positions. The step (iii) is a step of performing multiresolution transform for the gray scale images. The step (iv) is a step of calculating focal position probability distribution regarding the focal positions, for each pixel position. The step (v) is a step of acquiring an optimal focal position for each of the pixel positions. The step (vi) is a step of generating an in-focus image by providing a pixel corresponding to the acquired pixel value to the pixel position. In the step (v), the optimal focal position is approximately calculated by belief propagation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.