We describe several established error of t (EOF) functions for use in the least square tting of ellipses, and introduce a further four new EOFs. Four measures are given for assessing the suitability of such EOFs, quantifying their linearity, curvature bias, asymmetry, and overall goodness. These measures enable a better understanding to be gained of the individual merits of the EOF functions.

This edition of the IVC journal is devoted to some of the top-rated papers from BMVC2000, the 11th British Machine Vision Conference, hosted by the University of Bristol in September 2000. The conference coincided with a fuel shortage crisis, but there were no delegate cancellations and there were even some new registrations on the ®rst day. Altogether there were around 150 delegates from all o...

A new class of biometrics based upon ear features is introduced for use in the development of passive identi cation systems The viability of the proposed biometric is shown both theoretically in terms of uniqueness and measurability over time and in practice through the implementation of a proof of concept system Identi cation by ear biometrics is promising because it is passive like face recog...

Weedy and invasive plants cost Americans billions of dollars annually in crop damage and lost earnings. Various Western states have reported annual weed control costs in the hundreds of millions of dollars. Herbicides account for more than 72 per cent of all pesticides used on agricultural crops. $4 billion was spent herbicides in the US in 2006 and 2007 (Grube, et al, 2011). The USDA Economic ...

In this paper, the problem of constructing geometric models from data provided by 3-D imaging sensors is addressed. Such techniques allow for rapid model-ing of sculptured free-form shapes and generation of geometric models for existing parts. In order for a complete data set to be obtained, multiple images, each from a diierent viewpoint, have to be merged. A technique stemming from the Iterat...

Inspection of components using machine vision technologies provides solution for quality and process control. Various applications of Machine vision technologies are automotive, Pharmaceutical, food and beverage, electronics, packages, process control and special application. In this paper dimensional measurement, optical character reorganization, process control using image processing, checkin...

Ricoh has been providing automation and other labor-saving systems in many areas using machine vision. Our machine vision activities are now in their second stage and we are working on how we can elevate workplaces into a space for knowledge creation. Our system autonomously generates rules, understands the situation, presents optimal methods, and helps people at work to make decisions quickly....

Current applications of machine vision in agriculture are briefly reviewed. The requirements and recent developments of hardware and software for machine vision systems are discussed, with emphases on multispectral and hyperspectral imaging for modern food inspection. Examples of applications for detection of disease, defects, and contamination on poultry carcasses and apples are also given. Fu...