Self-adaptive motion artifact detection method and three-dimensional reconstruction method using the same

A self-adaptive motion artifact detection method, comprising:

• S1, acquiring a multi-view rearranged image, and decoupling the multi-view rearranged image to obtain a scanning sub-image sequence;
• and
• S2, dividing each of scanning sub-images in the scanning sub-image sequence into blocks;
• S3, determining a reference scanning sub-image, and sequentially performing motion artifact detection on individual sub-blocks in the reference scanning sub-image and sub-blocks in remaining scanning sub-images, including:
• S31, traversing, according to a j-th sub-block in the reference scanning sub-image, sub-blocks with a same serial number j in the remaining s−1 scanning sub-images;
• S32, acquiring an energy difference map between the j-th sub-block in the reference scanning sub-image and the j-th sub-block in each scanning sub-image;
• and
• S33, obtaining a motion artifact detection result of the j-th sub-block in the each scanning sub-image relative to the j-th sub-block of the reference scanning sub-image based on the energy difference map, including:
• determining a maximum value of the energy difference map, and determining, according to spatial coordinates of the maximum value, a first pixel value of the maximum value of the energy difference map in the j-th sub-block of the reference scanning sub-image, and a second pixel value of the maximum value of the energy difference map in the j-th sub-block of a corresponding scanning sub-image;
• and
• performing motion artifact detection as follows, based on the maximum value of the energy difference map, the first pixel value and the second pixel value:
• motion
• s
• =
• (
• diff
• max
• /
• E
• 1
• )
• >
• σ
• ⁢
• 
• (
• diff
• max
• /
• E
• 2
• )
• >
• σ
• )
• wherein motions represents the detection result, diffmax represents the maximum value of the energy difference map, E1 represents the first pixel value, E2 represents the second pixel value, ∥ represents a OR logical operation, and σ represents a preset threshold.