Virtual ruler

Abstract

In some embodiments, first information indicative of an image of a scene is accessed. One or more reference features are detected, with the reference features being associated with a reference object in the image. A transformation between an image space and a real-world space is determined based on the first information. Second information indicative of input from a user is accessed, and identifies an image-space distance in the image space corresponding to a real-world distance of interest in the real-world space. The real-world distance of interest is then estimated based on the second information and the determined transformation.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims U.S. Provisional Application No. 61 / 586,228 filed on January 13, 2012 entitled "VIRTUAL RULER" and the application on July 31, 2012 entitled "Virtual Ruler (VIRTUAL RULER)" 13 / 563,330, which is hereby incorporated by reference in its entirety. Background technique [0003] Often, it is important to identify the exact size of an object in view. For example, it may be necessary to identify the size of an envelope to determine postage, a picture to determine frame size, a table to determine whether it will fit in a room, etc. While tape measures allow us to measure these dimensions, we may not have a tape measure when we wish to obtain a measurement. Contents of the invention [0004] In some embodiments, methods and systems for assisting a user in determining real world measurements are provided. An imaging device, such as a camera within a cellular telephone, may capture an image of the scene....

AI Technical Summary

Problems solved by technology

While a tape measure allows us to measure these dimensions, we may not have a tape measure when we wish to obtain a measurement

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