| 发明名称 |
METHOD AND SYSTEM FOR MEASURING DISTANCE |
| 摘要 |
A method and a system for measuring a distance from a reference point to an object are provided. The method comprises the following steps. At least one image of an object is captured through a lens comprising a phase mask composed of a parallel plate and a wedge prism. At least two corresponding regions of interest (ROI) are obtained from the images. The regions of interest correspond to identical portions of the object. The relative coordinates between corresponding locations within the corresponding regions of interest is measured. The distance is calculated according to the relative coordinates. |
| 申请公布号 |
US2015117718(A1) |
申请公布日期 |
2015.04.30 |
| 申请号 |
US201414447354 |
申请日期 |
2014.07.30 |
| 申请人 |
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE |
发明人 |
ANGOT Ludovic;CHANG Chuan-Chung |
| 分类号 |
G01B11/14;G06T7/00;G06K9/46 |
主分类号 |
G01B11/14 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for measuring a distance from a reference point to an object, comprising:
capturing at least one image of the object through a lens comprising a phase mask composed of a parallel plate and a wedge prism; obtaining at least two corresponding regions of interest (ROI) from two sub-images of the at least one image, wherein the at least two ROI correspond to an identical portion of the object, one of the at least two ROI is captured through the parallel plate and another one of the at least two ROI is captured through the wedge prism; measuring relative coordinates according to the at least two corresponding ROI; and calculating the distance according to the relative coordinates. |
| 地址 |
Hsinchu TW |
