3d projection method and 3d projection device

A 3D projection method, adapted to a 3D projection device, comprising steps of:

• obtaining a first eye image and a second eye image by the 3D projection device, wherein the first eye image comprises a plurality of first pixel groups, the second eye image comprises a plurality of second pixel groups, and each of the plurality of first pixel groups and each of the plurality of second pixel groups comprises a first pixel, a second pixel, a third pixel, and a fourth pixel;
• generating a first projection image by the 3D projection device based on the first pixels of the plurality of first pixel groups;
• generating a second projection image by the 3D projection device based on the second pixels of the plurality of second pixel groups;
• generating a third projection image by the 3D projection device based on the third pixels of the plurality of first pixel groups;
• generating a fourth projection image by the 3D projection device based on the fourth pixels of the plurality of second pixel groups;
• and
• sequentially projecting the first projection image, the second projection image, the third projection image, and the fourth projection image by the 3D projection device, wherein the first projection image and the third projection image correspond to the first eye image, the second projection image and the fourth projection image correspond to the second eye image, the first eye image is one of a left eye image and a right eye image, and the second eye image is another one of the left eye image and the right eye image.