Application development: Halftone effect with DXF output (Vector halftone filter for grayscale images)

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  • #40982
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Experience Level: Intermediate
The job is the creation of an application which will do the following:

- Allow input of a grayscale jpg\\bmp file
- Sample the jpg\\bmp image to produce a halftone effect equivalent to the photoshop halftone filter (dots of varying sizes on regular grid, dot size dependant on source image darkness from pixels around each sampled dot point).
- Output of a raster\\bitmap version of the halftone effect is not required.
- Output must be in dxf format, with each halftone dot existing in the dxf file as a \'CIRCLE\' object (defined by circle centre point and circle radius for each dot).
- Options must allow for varying maximum pixel size for halftone effect (dot spacing) and angle of halftone dot grid.
- No graphical interface is required.
- The application should be standalone ideally, although a filter that ran through photoshop or illustrator would be acceptable.

Attached DXF and jpg files give a typical example of what is required - base image and dxf file (note, pattern does not match exactly and is illustrative only). DXF file was produced by tracing bmp image in CAD program in this case.

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