Three-dimensional measurement of a remote object with a single CCD camera

Abstract

-This paper presents a novel method by regulating the height of a CCD camera to measure the width and height of a targeted object. That is, three-dimensional measurement can be obtained with the use of a single CCD camera. To facilitate the measurement using various kinds of CCD cameras, parameters pertinent to the cameras can be established via a proposed mechanism in this paper. As a result, any kinds of CCD cameras can be used to perform three dimensional measurement of a targeted object via software implementation of the proposed measuring method. No changes to the circuits or structure of the camera are required.

A Novel Method for Estimating Distances from a Robot to Humans Using Egocentric RGB Camera

“…While the RGB-D sensors demonstrate good performance in many indoor applications, the performance is generally poor when applied in outdoor environments [19]. Also, the accuracy of this form of distance estimation highly depends on surface uniformity and material [6,7]. Finally, a further shortcoming is that many robots aimed to support social interaction, e.g., most telepresence robots are in fact not equipped with RGB-D sensors.…”

“…Estimating the distance is difficult for several reasons. First, sensors such as infrared, laser, or ultrasonic, depend on surface uniformity and material to estimate the distance [6,7]. Second, there can be several people in a given scene, and more than one group of people engaged in social interactions at the same time as perceived from the robot’s egocentric perspective (see Figure 1).…”