A color feature learning and robust interpretation of moving object using HMM

Hidehiro Ohki; Takamasa Hori; Keiji Gyohten; Shinji Shigeno

doi:10.1117/12.571828

25 October 2004 A color feature learning and robust interpretation of moving object using HMM

Hidehiro Ohki, Takamasa Hori, Keiji Gyohten, Shinji Shigeno

Proceedings Volume 5603, Machine Vision and its Optomechatronic Applications; (2004) https://doi.org/10.1117/12.571828
Event: Optics East, 2004, Philadelphia, Pennsylvania, United States

Abstract

Spot observation by computer vision is the one of fundamental key technology. In this paper, we propose a moving object color learning and robust recognition with Hidden Markov Model(HMM) from various scenes under different light conditions. Feature box which is a small area in a image is defined to observe a spot. The time series data of such as averages of R, G, B intensities in feature boxes are the input signals of our system. The HMMs learn correspondences of input signals with object color of moving object and background. Baum-Welch and Vi-terbi algorithms are used to learning and interpret the spot scene transition. In moving object color interpretation, the system selects a best HMM model for input signals using maximum likelihood method based on a given object color appearance grammar. In the experiment, we examine the number of feature boxes and its shapes under some light conditions. The feature boxes adjoining in vertical column whose height is almost same as objects results best score in the experiment. It shows the effectiveness of our method.

Citation Download Citation

Hidehiro Ohki, Takamasa Hori, Keiji Gyohten, and Shinji Shigeno "A color feature learning and robust interpretation of moving object using HMM", Proc. SPIE 5603, Machine Vision and its Optomechatronic Applications, (25 October 2004); https://doi.org/10.1117/12.571828

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KEYWORDS

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Detection and tracking algorithms

Image segmentation

Machine vision

Computer vision technology

Image processing

Visual process modeling

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