Research Article

[Retracted] Discussion on Teaching Method of Digital Image Processing Technology Based on PBL

Table 1

Correspondence between knowledge points and practical problems.

Knowledge pointsPractical problems

Smooth filteringBlur photos to enhance haziness, remove freckles on the face
Algorithm for converting color image to gray imagePhoto style transformation (retro style, sketch style, etc.)
Image addition algorithmAdd text, border, and other decoration operations to the photo
Image stitching
Geometric transformation of imageAdjust the angle of the photo, zoom in and out of photos
Image sharpening
Image segmentation
Image matting, composite photo