Configuration Factors and Effective Area of a Domestic Animal Body for Radiative Heat Exchange

家畜体辐射热交换的结构因素及有效面积

• 批准号: 61560287
• 负责人: MINOWA Masayoshi
• 金额: $ 1.47万
• 依托单位: KAGAWA University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61560287/
• 关键词: Configuration factor; Effective radiation area; Three-dimensional coordinates of an animal body; Optical range sensing method; 画像処理; 豚姿態の3次元座標

The purpose of the present study is to calculate the configuration factors and effective radiation area of a domestic animal by the computer-graphics technique. Three-dimensional orthogonal coordinates of arbitrary points on an animal body surface are necessary for this calculation.An instrument system and computer programs were developed in order to measure the three-dimensional coordinates by using the optical range sensing and digital image processing methods. The system was composed of a television camera, a video tape recorder, a monitor television, an image processing unit, an electronic microcomputer unit and a laser-light unit.Images of three stuffed pigs(27, 65 and 88 kg in live-weight) were taken with the TV camera under projecting rays of laser-light on them. The images were transmitted to the computer and were analyzed by the image processing method. Three-dimensional coordinates of points on the pigh's body surface were calculated based on the principle of photogrammetry from the images. The accuracy of these coordinates was satisfactory.The configuration factors and effective radiation areas of pigs are now being calculated from the three-dimensional coordinates by means of the computer-graphics technique. The factors and effective areas of cattle and fowl will be analyzed after the present calcultion.

本文用计算机图形技术计算家畜的形态因子和有效辐射面积。为了测量动物体表任意点的三维正交坐标，研制了一套仪器系统和计算机程序，利用光学测距和数字图像处理方法测量动物体表任意点的三维正交坐标。该系统由电视摄像机、录像机、监视电视机、图像处理单元、电子微机单元和激光单元组成，用电视摄像机在激光照射下拍摄了三只活体猪（27、65和88公斤）的图像。将采集到的图像传输到计算机，并通过图像处理方法进行分析。根据摄影测量原理，从采集到的图像中计算出大熊猫体表各点的三维坐标。这些坐标的精度是令人满意的。目前正利用计算机绘图技术从三维坐标计算猪的构型因子和有效辐射面积。通过计算，分析了影响畜禽养殖的因素和影响区域。