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Quantitative perimeter and area measurements of digital images
Author(s) -
Barba Joseph,
Chan Kin S.,
Gil Joan
Publication year - 1992
Publication title -
microscopy research and technique
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 118
eISSN - 1097-0029
pISSN - 1059-910X
DOI - 10.1002/jemt.1070210407
Subject(s) - perimeter , pixel , computer science , tracing , computer vision , chain code , quantization (signal processing) , artificial intelligence , computer graphics (images) , jitter , algorithm , mathematics , image (mathematics) , geometry , telecommunications , operating system
Quantitative estimations of perimeter and area from digitized video images, and the application of these features in morphometry, are discussed. Estimations from manual tracings via interactive peripherals and from chain codes are addressed. Topics discussed are calibration, determination of vertical and horizontal pixel resolution, effects of tracing jitter, and for chain codes, the spatial quantization scheme representation of the digital contour. Finally, new perimeter estimators for 4‐connected and 8‐connected chain codes for non‐unity pixel aspect ratio are presented with simulation results.