Mark Nixon 
Feature Extraction and Image Processing [PDF ebook] 

Focusing on feature extraction while also covering issues and techniques such as image acquisition, sampling theory, point operations and low-level feature extraction, the authors have a clear and coherent approach that will appeal to a wide range of students and professionals. – Ideal module text for courses in artificial intelligence, image processing and computer vision- Essential reading for engineers and academics working in this cutting-edge field- Supported by free software on a companion website