Machine Vision, 3rd Edition

CHAPTER 27 Image Acquisition

27.1 Introduction

When implementing a vision system, nothing is more important than image acquisition. Any deficiencies of the initial images can cause great problems with image analysis and interpretation. An obvious example is that of lack of detail owing to insufficient contrast or poor focusing of the camera. This can have the effect, at best, that the dimensions of objects will not be accurately measurable from the images, and at worst that the objects will not even be recognizable, so the purpose of vision cannot be fulfilled. This chapter examines the problems of image acquisition.

Before proceeding, we should note that vision algorithms are of use in a variety of areas where visual pictures are not directly ...