Computer and Machine Vision, 4th Edition

Chapter 21

Inspection of Cereal Grains

Inspection of cereal grains is an exceptionally mundane and repetitive task, and to some extent contrasts with many of the examples given in Chapter 20 in that the emphasis is on detecting contaminants rather than finding manufacturing faults. This chapter presents three case studies that cover the topic and at the same time air and solve relevant theoretical questions.

Look out for:

• the limitations of the immediately obvious technique—global thresholding.

• the value of morphological filtering.

• the relatively unusual need for median filtering as a morphological operation.

• the use of bar (linear feature) detectors for locating insects.

• how the vectorial bar detector operator is optimized.

• how ...