Patent ID: 11907283
Assignee: ALIBABA GROUP HOLDING LIMITED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 16:
17. The one or more non-transitory computer readable media as recited in claim 13, wherein performing the splicing operation on the pixel matrices of the root node of the row-level index of the raster object, performing the down-sampling operation on the obtained splicing result matrix, and generating the column-level index according to the down-sampling result comprise:
splicing the pixel matrices of the root node according to a spatial positional relationship between raster objects corresponding to the pixel matrices of the root node to obtain the splicing result matrix; and
performing a down-sampling operation with a down-sampling multiplying power of a defined multiplying power for the splicing result matrix, and generating the column-level index according to the down-sampling result.