Convert a mosaic picture to xy coordinate

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Ivan MO 2020-3-12

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编辑： Pranjal Kaura 2021-9-29

Hello!

I have a mosaic picture. I would like to have a xy coordinate on it to indicate the location of each tiles. How can I do that ??

I am new to matlab image analysis. I really have no idea on it. Please help! Thank you very much.

Here is a sample of the mosaic picture with around 2500 tiles.

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Mohammad Sami 2020-3-13

编辑：Mohammad Sami 2020-3-13

You want to insert the text into the picture ?

The computer vision toolbox have a function to add text into the picture

https://www.mathworks.com/help/vision/ref/inserttext.html

https://www.mathworks.com/help/vision/ref/insertobjectannotation.html

Ivan MO 2020-3-13

Um.....

The xy-axis should be outside the mosaic picture, just like the xy coordinate of a plot. The value of xy-axis should be located within the middle of a tile so that I can locate the tile in terms of (X,Y).

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回答（1 个）

Pranjal Kaura 2021-9-29

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编辑：Pranjal Kaura 2021-9-29

在 MATLAB Online 中打开

Hey Ivan,

You can use the 'xticks' and 'yticks' function to add custom ticks to an axes. You could set the axes labels to '1:num_Columns' and '1:num_Rows' according your mosaic plot.

If you're using imshow to display your image, you could create a custom axes obect and set it as the parent axis of the image object. You could refer to the following code snippet for this.

imshow(image,'Parent',custom_Axes);

You could also refer to this answer for more help.

Hope this helps!