Patent ID: 11880966
Assignee: WISTRON CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. An image quality assessment apparatus, comprising:
a communication transceiver, configured to receive an image; and
a processor, coupled to the communication transceiver, and configured to:
form a plurality of to-be-assessed blocks for the image;
input the to-be-assessed blocks to a quality assessment model, wherein the quality assessment model is trained based on a machine learning algorithm;
determine a quality of the image according to an output result of the quality assessment model,
determine an encoding level of each of the to-be-assessed blocks, wherein the different encoding levels correspond to different weights, the encoding level of the to-be-assessed blocks with larger intra pixel difference corresponds to the weight with higher value; and
determine the quality of the image according to qualities of the to-be-assessed blocks and the corresponding weights by following calculation formula:, Q
  =
  
   
    
     
      ∑
       
     
     
      k
      =
      1
     
     L
    
    ⁢
    
     q
     k
    
    ⁢
    
     w
     k
    
   
   
    
     
      ∑
       
     
     
      k
      =
      1
     
     L
    
    ⁢
    
     w
     k
    
   
  
 

wherein Q is the quality of the image, qk is the quality of a k-th to-be-assessed block, wk is the weight of the k-th to-be-assessed block, L is total number of the to-be-assessed blocks.