Concave points for separating touching particles

Deisy Chaves; Maria Trujillo; Juan Manuel Barraza

doi:10.1117/12.2180001

4 March 2015 Concave points for separating touching particles

Deisy Chaves, Maria Trujillo, Juan Manuel Barraza

Proceedings Volume 9443, Sixth International Conference on Graphic and Image Processing (ICGIP 2014); 94431W (2015) https://doi.org/10.1117/12.2180001
Event: Sixth International Conference on Graphic and Image Processing (ICGIP 2014), 2014, Beijing, China

Abstract

Separation of touching objects/particles is a step before measuring morphological characteristics. An approach for identifying and splitting touching char particles is presented. The proposed approach is based on two processes. First, concave points are detected using a concavity measure and a list of touching point candidates is built. Second, separation lines are identified using location, length, blur and size. A decision criterion is derived for deciding whether or not to split a particle. The proposed approach is evaluated using 180 images of char particles and compared to the Watershed algorithm. The evaluation was twofold: quantifying the accuracy of identifying touching particles and measuring the separation quality. Expert criteria are used as a ground truth for qualitative evaluations. A good agreement between the visual judgement and automatic results was obtained, using the proposed approach.

Citation Download Citation

Deisy Chaves, Maria Trujillo, and Juan Manuel Barraza "Concave points for separating touching particles", Proc. SPIE 9443, Sixth International Conference on Graphic and Image Processing (ICGIP 2014), 94431W (4 March 2015); https://doi.org/10.1117/12.2180001

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