for j in range(int(dim/2),h-int(dim/2)):
时间: 2024-05-21 09:14:26 浏览: 66
这是一个 Python 中的 for 循环语句,其中 range() 函数生成一个整数序列,从 int(dim/2) 开始到 h-int(dim/2) 结束,步长为 1。循环变量 j 在每次循环中依次取这个序列中的值。在循环体中可以使用 j 来进行一些操作或计算。其中 int() 函数将 dim/2 的结果转换为整数。
相关问题
if size(im.shape)==3: for i in range(int(dim/2),w-int(dim/2)): for j in range(int(dim/2),h-int(dim/2)): for m in range(-int(dim/2),-int(dim/2)+int(dim)): for n in range(-int(dim / 2), -int(dim / 2) + int(dim)): b.append(im[i+m,j+n,0]) g.append(im[i+m,j+n,1]) r.append(im[i+m,j+n,2]) img[i,j,0]=sum(np.multiply(np.array(a),np.array(b)))/A img[i, j, 1] =sum(np.multiply(np.array(a),np.array(g)))/A img[i, j, 2] =sum(np.multiply(np.array(a),np.array(r)))/A b=[];g=[];r=[] else: for i in range(int(dim/2),w-int(dim/2)): for j in range(int(dim/2),h-int(dim/2)): for m in range(-int(dim/2),-int(dim/2)+int(dim)): for n in range(-int(dim / 2), -int(dim / 2) + int(dim)): b.append(im[i+m,j+n]) img[i,j]=sum(np.multiply(np.array(a),np.array(b)))/A b=[] return img 改成只对灰度图像处理的代码
if len(im.shape)==2:
for i in range(int(dim/2),w-int(dim/2)):
for j in range(int(dim/2),h-int(dim/2)):
for m in range(-int(dim/2),-int(dim/2)+int(dim)):
for n in range(-int(dim / 2), -int(dim / 2) + int(dim)):
b.append(im[i+m,j+n])
img[i,j]=sum(np.multiply(np.array(a),np.array(b)))/A
b=[]
return img
for m in range(-int(dim/2),-int(dim/2)+int(dim)): for n in range(-int(dim / 2), -int(dim / 2) + int(dim)):
这段代码中,使用了两个循环语句,分别是for m in range()和for n in range(),用于遍历二维矩阵中的每个元素。其中,range()函数表示从起始值到终止值的一个序列。在这里,起始值为负数的一半,终止值为负数的一半加上矩阵的维度,这样就可以遍历整个矩阵。在循环体内部,可以对每个元素进行相应的操作。
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