Systems and methods for image generation

A method for image generation implemented on at least one machine each of which includes at least one processor and at least one storage device, the method comprising:

• obtaining projection data of an object;
• generating, based on a first weighting function and the projection data, a first image corresponding to the object, wherein the first image includes a first region corresponding to at least a part of the object;
• generating, based on a second weighting function and the projection data, a second image corresponding to the object, wherein the second image includes a second region corresponding to the at least part of the object, and the second region of the second image presenting a different feature from the first region of the first image;
• and
• generating a third image of the object based on the first image and the second image.

A non-transitory computer readable medium embodying a computer program product, the computer program product comprising instructions configured to cause a computing device to perform operations including:

• obtaining projection data of an object;
• generating, based on a first weighting function and the projection data, a first image corresponding to the object, wherein the first image includes a first region corresponding to at least a part of the object;
• generating, based on a second weighting function and the projection data, a second image corresponding to the object, wherein the second image includes a second region corresponding to the at least part of the object, and the second region of the second image presenting a different feature from the first region of the first image;
• and
• generating a third image of the object based on the first image and the second image.