Method and device for image rotation, and apparatus for image formation

A device for image rotation, comprising:

• a memory, storing program instructions for a method for image rotation;
• and
• one or more processors, coupled to the memory and, when executing the program instructions, configured for:
• obtaining a tilt angle and size information of a to-be-processed image data,
• obtaining position information of a target pixel corresponding to the each rotated original pixel by performing a calculation based on the tilt angle and the size information of the to-be-processed image data and position information of the each original pixel,
• obtaining an enhancement parameter value and an edge parameter value by filtering the each original pixel, and
• performing a two-dimensional interpolation process based on a plurality of neighboring pixels of the each original pixel, the enhancement parameter value, and the edge parameter value, and obtaining a target pixel value of the target pixel corresponding to the each original pixel according to an original pixel value of the each original pixel, the enhancement parameter value, and the edge parameter value, thereby obtaining a target image corresponding to the rotated to-be-processed image data.

An apparatus for image formation, comprising:

• a memory, storing program instructions for a method for image formation;
• and
• one or more processors, coupled to the memory and, when executing the program instructions, configured for:
• obtaining a to-be-processed image data by scanning an original document or receiving from external, and
• detecting a tilt angle and size information of the to-be-processed image data, used for image rotation, the image rotation including:
• obtaining the tilt angle and the size information of the to-be-processed image data,
• obtaining position information of a target pixel corresponding to each rotated original pixel by performing a calculation based on the tilt angle and the size information of the to-be-processed image data and position information of each original pixel,
• obtaining an enhancement parameter value and an edge parameter value by filtering the each original pixel, and
• performing a two-dimensional interpolation process based on a plurality of neighboring pixels of the each original pixel, the enhancement parameter value, and the edge parameter value, and obtaining a target pixel value of the target pixel corresponding to the each original pixel according to an original pixel value of the each original pixel, the enhancement parameter value, and the edge parameter value, thereby obtaining a target image corresponding to the rotated to-be-processed image data.