Hewlett-Packard Development Company, L.p.

Ruiyi Mao

Robert Alan Ulichney

Jan Philip Allebach

Utpal Kumar Sarkar

Lluis Abello Rosello

Wanling Jiang

According to an example, an apparatus may include a processor and a memory. The memory may have stored thereon machine readable instructions that may cause the processor to access an initial halftone image of a three-dimensional (3D) object, the initial halftone image being generated from a continuous tone image of the 3D object. The instructions may also cause the processor to iteratively modify voxel data for the initial halftone image to identify updated voxel data that more accurately corresponds to the continuous tone image than the initial halftone image and to generate halftone image printing data for the 3D object containing the updated voxel data.

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West Lafayette, IN, United States of America

Ruiyi Mao