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QPainter 绘制点 #include <QPainter> void QPainter::drawPoint(int x, int y) This is an overloaded function. Draws a single point at position (x, y). ##### 阅读全文
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yolov5训练表示识别模型日志记录 1、标注数据 2、整理数据 3、训练:修改:myvoc.yaml train: VOC_2022060901/train.txt val: VOC_2022060901/val.txt # number of classes nc: 1 # class name 阅读全文
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opencv调整图片曝光 def gamma_trans(img,gamma):#gamma函数处理 gamma_table=[np.power(x/255.0,gamma)*255.0 for x in range(256)]#建立映射表 gamma_table=np.round(np.array 阅读全文
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threejs Matrix3 var matrix3_1 = new THREE.Matrix3(); var index1_new_x = t_matrix[0] * index1_x + t_matrix[3]*index1_y + t_matrix[6]*index1_z; var inde 阅读全文
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function() { class e extends r.ObjectGroup { constructor(e) { super(r.ObjectGroupType.VIEWSHED, { priority: 20 }), e = e || {}, this._position = new T 阅读全文
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threejs向量旋转 threejs一个向量绕另一个向量旋转 threejs向量变换 var v3 = new THREE.Vector3(0,1,1); var v1 = new THREE.Vector3(1,0,0); var v2 = new THREE.Vector3(1,1,0); v 阅读全文
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threejs求两个向量的夹角 var v1 = new THREE.Vector3(1,0,0); var v2 = new THREE.Vector3(0,1,0); var angle1 = v1.angleTo(v2); // var angle2 = v2.angleTo(v1); // 阅读全文