Theoretically, three-dimensional (3D) GS algorithm can realize 3D displays; however, correlation of the output image is restricted because of the interaction among multiple planes, thus failing to meet the image-quality requirements in practical applications. We introduce the weight factors and propose the weighted 3D GS algorithm, which can realize selective control of the correlation of multi-plane display based on the traditional 3D GS algorithm. Improvement in image quality is accomplished by the selection of appropriate weight factors.