opencv中morphologyEx()函数

函数原型

CV_EXPORTS_W void morphologyEx( InputArray src, OutputArray dst,
                                int op, InputArray kernel,
                                Point anchor = Point(-1,-1), int iterations = 1,
                                int borderType = BORDER_CONSTANT,
                                const Scalar& borderValue = morphologyDefaultBorderValue() );
/** @brief Performs advanced morphological transformations.

The function morphologyEx can perform advanced morphological transformations using an erosion and dilation as
basic operations.

Any of the operations can be done in-place. In case of multi-channel images, each channel is
processed independently.

@param src Source image. The number of channels can be arbitrary. The depth should be one of
CV_8U, CV_16U, CV_16S, CV_32F or CV_64F.
@param dst Destination image of the same size and type as source image.
@param op Type of a morphological operation, see cv::MorphTypes
@param kernel Structuring element. It can be created using cv::getStructuringElement.
@param anchor Anchor position with the kernel. Negative values mean that the anchor is at the
kernel center.
@param iterations Number of times erosion and dilation are applied.
@param borderType Pixel extrapolation method, see cv::BorderTypes
@param borderValue Border value in case of a constant border. The default value has a special
meaning.
@sa  dilate, erode, getStructuringElement
 */

参数解释

• src：源图像
• dst：目标图像
• op：操作代号

代号	含义	作用
0	MORPH_ERODE	腐蚀运算（Erode operation）
1	MORPH_DILATE	膨胀运算（Dilate operation）
2	MORPH_OPEN	开运算（Opening operation）
3	MORPH_CLOSE	闭运算（Closing operation）
4	MORPH_GRADIENT	形态学梯度（Morphological gradient）
5	MORPH_TOPHAT	“顶帽”（Top hat）
6	MORPH_BLACKHAT	“黑帽”（Black hat）
7	MORPH_HITMISS

• kernel：核(用于膨胀操作的结构元素)，可使用getStructuringElement()方法创建
• anchor：锚点坐标，为负代表核的中心坐标
• iterations：迭代次数
• borderType：像素外推方法，具有默认值 BORDER_CONSTANT
• borderValue：边界为常数时的边界值，有默认值morphologyDefaultBorderValue()

例子

opencv形态学操作函数morphologyEx
morphologyEx（形态学操作）

相关函数

opencv getStructuringElement函数 图形学运算前获得kernel元素

参考博客

• https://blog.csdn.net/jiangjiao4726/article/details/75571014?utm_medium=distribute.pc_relevant_t0.none-task-blog-2_defaultBlogCommendFromMachineLearnPai2_{default-1.control&dist_request_id=&depth_1-utm_source=distribute.pc_relevant_t0.none-task-blog-2}default_{BlogCommendFromMachineLearnPai2}default-1.control
• https://www.jianshu.com/p/ee72f5215e07
• https://blog.csdn.net/kksc1099054857/article/details/76569718