張婧婧+李勇偉
摘 要:基于線性回歸理論與機器視覺技術,文中探討了焉耆馬體尺(如體高、體長、胸圍、管圍)的數據測量方法。系統的設計借鑒平面數據的標定技術;利用數據相關性建立多元線性回歸模型;通過Matlab GUI工具實現系統可視化,在動物體尺的測量方面具備理論依據和參考價值。此外,文中列舉馬體輪廓提取的相關方法,并于本測量方案中排除了輪廓提取的必要性,闡明文中體尺測量方案的基本流程,實現馬體位姿或環境光照和背景要求嚴格情況下體尺數據的測量要求。
關鍵詞:焉耆馬;體尺;線性相關;多元線性回歸方程
中圖分類號:S821.1 文獻標識碼 A DOI 編碼:10.3969/j.issn.1006-6500.2018.01.006
Abstract:Based on linear regression theory and machine vision technology, the data measurement methods of Yanqi horse body ruler (such as body height, body length, chest circumference, pipe circumference) were discussed. We refered to the calibration technique of plane data in the system design; and established data correlation by using multivariate linear regression model; then we implemented system visualization through the Matlab GUI tool, which has theoretical basis and reference value for the measurement of animal body size. In addition, the relevant methods of horse body contour extraction were listed in this paper, and the necessity of contour extraction was eliminated in this measurement scheme. We expounded the basic flow chart of body size measurement, to meet the requirements of horse body posture or environment, illumination and background for the measurement of body size data.
Key words:Yanqi horse; body size; linear correlation; multiple linear regression equation
體尺測量技術是鑒定馬的品種、推進馬的良種化進程中不可或缺的技術。目前,機器視覺的動物體尺測量在國內已經取得一定進展[1-8],借鑒動物體尺的研究成果,依據新疆馬業協會發布的地方標準,本文以新疆特色畜牧產業為研究背景,以機器視覺的體尺測量技術為實現手段,研究焉耆馬體尺測量的實現依據和技術方案。
1 馬體尺的測量標準
根據新疆馬業協會發布的地方標準,測量馬體尺的基本數據包括體高、體長、胸圍、管圍,其測量標準如下。體高:從鬐甲頂點到地面的垂直距離; 體長:從肩端到臀端的直線距離; 胸圍:在肩腳骨后緣垂直繞胸一周的長度; 管圍:左前管部上1/3部的下端最細處,水平繞其一周的長度。
應用CINEMA 4D軟件設計馬體的骨骼,首先建立馬體測量示例如圖1所示?!?br>