drawing = np.zeros(img.shape[:], dtype=np.uint8)
时间: 2023-11-15 12:05:27 浏览: 39
This line of code creates a numpy array called 'drawing' with the same shape as the input image (img) and data type 'unsigned integer 8-bit' (dtype=np.uint8). The array is initialized with all values set to zero.
This is commonly used in computer vision and image processing tasks to create a blank canvas where we can draw lines, shapes or other objects on top of the input image. The resulting 'drawing' array can then be overlaid onto the original image to visualize the changes made.
相关问题
emptyImage = np.zeros(img.shape, np.uint8)
这是一个使用 numpy 库创建一个与给定图像相同大小的全黑图像的方法。这里的 img 是指原始图像。使用 np.zeros 函数创建一个所有元素都为 0 的数组,然后将其转换为 numpy.uint8 类型,以确保它在图像操作中正确地工作。然后,使用与原始图像相同的形状创建相同大小的黑色图像,以便在进行图像处理时使用。
tmpLbl = np.zeros(label.shape)
tmpLbl = np.zeros(label.shape)是一个将label数组的形状作为参数,创建一个与label形状相同的全零数组的操作。这个操作使用了NumPy库中的zeros函数,该函数可以返回一个给定形状和类型的全零数组。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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