Fish measurement using Android smart phone: the example of swamp eel

Baisong Chen; Zhuo Fu; Haiying Ouyang; Yingze Sun; Changshui Ge; Jing Hu

doi:10.1117/12.2019493

4 March 2013 Fish measurement using Android smart phone: the example of swamp eel

Baisong Chen, Zhuo Fu, Haiying Ouyang, Yingze Sun, Changshui Ge, Jing Hu

Proceedings Volume 8761, PIAGENG 2013: Image Processing and Photonics for Agricultural Engineering; 876110 (2013) https://doi.org/10.1117/12.2019493
Event: Third International Conference on Photonics and Image in Agriculture Engineering (PIAGENG 2013), 2013, Sanya, China

Abstract

The body length and weight are critical physiological parameters for fishes, especially eel-like fishes like swamp eel(Monopterusalbus).Fast and accurate measuring of body length is significant for swamp eel culturing as well as its resource investigation and protection. This paper presents an Android smart phone-based photogrammetry technology for measuring and estimating the length and weight of swamp eel. This method utilizes the feature that the ratio of lengths of two objects within an image is equal to that of in reality to measure the length of swamp eels. And then, it estimates the weight via a pre-built length-weight regression model. Analysis and experimental results have indicated that this method is a fast and accurate method for length and weight measurements of swamp eel. The cross-validation results shows that the RMSE (root-mean-square error) of total length measurement of swamp eel is0.4 cm, and the RMSE of weight estimation is 11 grams.

Citation Download Citation

Baisong Chen, Zhuo Fu, Haiying Ouyang, Yingze Sun, Changshui Ge, and Jing Hu "Fish measurement using Android smart phone: the example of swamp eel", Proc. SPIE 8761, PIAGENG 2013: Image Processing and Photonics for Agricultural Engineering, 876110 (4 March 2013); https://doi.org/10.1117/12.2019493

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KEYWORDS

Error analysis

Photogrammetry

Data modeling

Cameras

Galactic astronomy

Image processing

Algorithm development

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