Question

我在matlab中有一个B = 700x800的二进制图像。我想要做的是我需要一个与B大小相同的矩阵A，而不是只存储像素，我希望它包含对应于连接组件的高度像素属于二进制Image。

我该怎么做？

Referencs

关于矩阵A的形成 Extraction and Recognition of Artificial Text in Multimedia Documents

Answer 1

使用区域道具和边界框属性和pixelIdList
对于每个连接的组件，根据边界框为所有像素提供高度值

代码：

row = 100;
col = 100;
% Create a sample binary image
a = zeros(row,col);
a(20:30,40:60) = 1;
a(1:10,80:90) = 1;

% Finds bounding box of each component
regions = regionprops(im2bw(a),'BoundingBox','PixelIdxList');

% Go over each region and assigne is height
heightImage = zeros(row,col);
for i=1:1:length(regions)

    % Change the pixels of the component to have the hight of the its
    % bounding box

    regionPixels = regions(i).PixelIdxList;
    regionHegiht = regions(i).BoundingBox(4);

    heightImage(regionPixels) = regionHegiht;

end


imshow(heightImage)

Image中每个像素的连通分量的高度矩阵

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