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

Claim 0:
1. An image quality assessment method, comprising:
forming a plurality of to-be-assessed blocks for an image;
inputting the to-be-assessed blocks to a quality assessment model, wherein the quality assessment model is trained based on a machine learning algorithm; and
determining a quality of the image according to an output result of the quality assessment model,
the step of determining the quality of the image according to the output result of the quality assessment model comprises:
determining 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
determining 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.