Method and apparatus for generating image information

An apparatus for generating image information, comprising:

• at least one processor;
• and
• a memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform operations, the operations comprising:
• acquiring a rotation angle and a scaling of a target image relative to a reference image, and acquiring an intrinsic parameter of a video camera collecting the reference image;
• generating a projective transformation matrix based on the rotation angle, the scaling and the intrinsic parameter;
• generating, based on the projective transformation matrix and a coordinate offset of each neighborhood pixel of a preset feature point in the target image, a coordinate offset of each neighborhood pixel of the feature point in the reference image;
• generating, based on a coordinate of the feature point in the reference image, the coordinate offset of the each neighborhood pixel of the feature point in the reference image and the projective transformation matrix, coordinates of the each neighborhood pixel of the feature point in the reference image;
• and
• generating, based on the coordinates of the each neighborhood pixel of the feature point in the reference image, a feature point descriptor of the feature point.

A computer readable storage medium, storing a computer program thereon, the computer program, when executed by a processor, cause the processor to perform operations, the operations comprising:

• acquiring a rotation angle and a scaling of a target image relative to a reference image, and acquiring an intrinsic parameter of a video camera collecting the reference image;
• generating a projective transformation matrix based on the rotation angle, the scaling and the intrinsic parameter;
• generating, based on the projective transformation matrix and a coordinate offset of each neighborhood pixel of a preset feature point in the target image, a coordinate offset of each neighborhood pixel of the feature point in the reference image;
• generating, based on a coordinate of the feature point in the reference image, the coordinate offset of the each neighborhood pixel of the feature point in the reference image and the projective transformation matrix, coordinates of the each neighborhood pixel of the feature point in the reference image;
• and
• generating, based on the coordinates of the each neighborhood pixel of the feature point in the reference image, a feature point descriptor of the feature point.