Abstract: od products manufacturing processes require a 3- dimensional measure of surface roughness to determine processing parameters and product grades and values. Currently, on-line measurement of wood surface roughness is limited to visual inspection and single-point laser-based triangulation or ultrasonic systems, while most off-line analysis is based on stylus tracing. Wood has unique characteristics that complicate surface texture measurement and analysis such as the need to separate distinct causes of error of form, waviness, and roughness as well as to correlate visual grades of processing standards with 1-dimensional (1-D), 2-D, and 3-D measures. This paper discusses the performance characteristics of a laser scatter/optical imaging system for wood roughness measurement and compares them to those of a stylus tracing system. The abilities of both approaches to capture the types of roughness information required in wood manufacturing processes are discussed as well as the functionality of 1-D, 2-D, and 3-D roughness descriptors.!23
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