我如何测量图像的距离

BWFERET Feret直径测量和角度的图像区域。= BWFERET(我)措施的最大Feret每个组件的属性(对象)的形象。我可以是一个二进制图像,连接组件或标记矩阵。= BWFERET (BW,属性)措施一组Feret每个连接组件的属性二进制映像BW(对象),这是一个逻辑数组。= BWFERET (CC、属性)措施一组Feret每个连接组件的属性在CC(对象),这是一个由BWCONNCOMP返回结构体。= BWFERET (L,属性)措施一组Feret属性标签矩阵中的每个标签组件(对象)L L的正整数元素对应于不同地区。例如,L等于1的元素的集合对应区域1;L等于2的元素的集合对应地区2;等等。[,L] = BWFERET(…)措施一组Feret每个组件的属性(对象)在二进制图像,连接组件或标记矩阵。 This also returns the corresponding label matrix L such that the first value in the table OUT corresponds to the labeled region 1, the second value with the labeled region 2 and so on. PROPERTIES can be an array of strings, a single character vector, a cell array of character vectors, or 'all'. If PROPERTIES is set to 'all' it returns all the Feret properties mentioned below. If no argument is provided, all maximum Feret properties are given as outputs. The set of valid measurement strings or character vectors includes 'MaxFeretProperties', 'MinFeretProperties' and 'all'. 'MaxFeretProperties' - Outputs all the properties related to maximum Feret Diameter. These properties are: MaxDiameter - Maximum Feret diameter length. MaxAngle - Angle of maximum Feret diameter with respect to X axis in degrees. The value lies between 180 to -180 degrees. MaxCoordinates - Endpoint coordinates of maximum Feret diameter. 'MinFeretProperties' - Outputs all the properties related to minimum Feret Diameter. These properties are: MinDiameter - Minimum Feret diameter length. MinAngle - Angle of minimum Feret diameter with respect to X axis in degrees. The value lies between 180 to -180 degrees. MinCoordinates - Endpoint coordinates of minimum Feret diameter. Class Support ------------- If the first input is BW, BW must be a logical array and it should be 2D. If the first input is CC, CC must be a structure returned by BWCONNCOMP. If the first input is L, L must be real, nonsparse and 2D. L can have any numeric class. The output OUT is returned as a table. Example 1 --------- % Calculate the minimum Feret diameter for objects in image I = imread('toyobjects.png'); bw = imbinarize(I, 'adaptive'); % Retain the two biggest objects in the image bw = bwareafilt(bw, 2); bw = imfill(bw, 'holes'); % Calculate the Feret properties of the objects in the image along with % the label matrix [out, L] = bwferet(bw, 'MinFeretProperties'); Example 2 --------- % Plot the maximum Feret diameter for objects in the image % Read an image I = imread('toyobjects.png'); % Binarize the image B = imbinarize(I, 'adaptive'); % Fill in the holes in the binary image B = imfill(B, 'holes'); % Show the image h = imshow(B) ax = h.Parent; % Convert to connected component struct using bwconncomp C = bwconncomp(B); % Calculate Feret Properties F = bwferet(C, 'MaxFeretProperties'); hold on % Display maximum Feret Diameters with their values for each object imdistline(ax, F.MaxCoordinates{1}(:,1), F.MaxCoordinates{1}(:,2)); imdistline(ax, F.MaxCoordinates{2}(:,1), F.MaxCoordinates{2}(:,2)); imdistline(ax, F.MaxCoordinates{3}(:,1), F.MaxCoordinates{3}(:,2)); imdistline(ax, F.MaxCoordinates{4}(:,1), F.MaxCoordinates{4}(:,2)); See also BWCONNCOMP, BWLABEL, BWLABELN, LABELMATRIX, REGIONPROPS. Documentation for bwferet doc bwferet