Extracting lines and other shapes using iTextsharp - itext

I want to extract the lines and other shapes in a PDF file and also need to get the position of lines and other shapes using itextsharp. So can anyone help for this??
Thanks in advance..

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Replace image(s) in PDF in swift. How to get image position in page?

I need to replace images in a PDFDocument or CGPDFDocument.
I found a way to extract images using the old Core Graphics API (i.e. not PDFKit). Here.
Now I would like to make a copy of a PDF but by replacing the existing images.
How can I get the width/height & coordinates of the existing images in the source PDF?
PDF are sooo complicated.
Thanks!

how to import an image into openjscad

I am trying to draw on an image that I have. 2D
the image is of a laptop and I want to draw lines around it to get measurements. I am very new to openjscad and am stuck on this very first step. Any help would be appreciated

You might want to convert your Design to svg using a tool like inkscape.
Then you can import your design by drag & drop.
See
https://en.wikibooks.org/wiki/OpenJSCAD_User_Guide#Supported_Language_/_File_Formats

How to modify an image (eg remove straight lines)

Good afternoon everybody.
I want to process an image with tesseract. I managed to read a simple text. Now, I want to read the text that is put inside the cells of a table. I think that the best way to do it is to remove the straight lines of the table, but I've no idea to make it. Can you help me?
Thank you in advance.

How to give names in PieChart each slice Coreplot iphone?

I draw PieChart with 4 slices in iPhone app. I want to add Names in each Slice in Pie Chart. Am using Core-Plot9. And also i want to give different colors for each slice in PieChart. How can do this? Please suggest me any idea/sample code to do this. Please help me. Thanks in advance.

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Thanks in advance.
I got how to split an image into multiple square images . But I want to know how to split into multiple images with different shapes like jigsaw puzzle images. If any one know please tell to me.

Just use a copy of part of image with large enough size to fit the whole shape. Then use a mask to cut the shape and the rest of it set as transperant.