CAJ | 학술논문

提出一种基于边缘保持的插值算法。利用拉普拉斯滤波增强图像的细节，缓解插值带来的平滑效果，计算非平坦区边缘的主导方向，在该区待插值位置沿着主导方向进行线性插值。平坦区域直接采用线性插值。该方法计算简单，可在任意边缘方向进行插值，图像可进行任意倍数放大。实验结果表明，该插值方法能保持边缘清晰，能较好地保留细节，图像质量得到较大提高。
제출일충기우변연보지적삽치산법。이용랍보랍사려파증강도상적세절，완해삽치대래적평활효과，계산비평탄구변연적주도방향，재해구대삽치위치연착주도방향진행선성삽치。평탄구역직접채용선성삽치。해방법계산간단，가재임의변연방향진행삽치，도상가진행임의배수방대。실험결과표명，해삽치방법능보지변연청석，능교호지보류세절，도상질량득도교대제고。
This paper presents an edge-oriented interpolation algorithm. Laplacian filtering is used to enhance image details. The dominant orientation of nonflat region is computed and linear interpolation along the dominant orientation is performed. Linear interpolation is directly used within the flat region. The proposed method is simple and can be used in any edge orientation with arbitrary scaling factors. The experiment results indicate that the proposed method can maintain the smoothness of edge and preserve the image details. The quality of up-scaled image is improved.