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Image Interpolation Using Multiscale Geometric Representations

机译:使用多尺度几何表示的图像插值

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摘要

With the ever increasing computational power of modern day processors, it has become feasible to use more robust and computationally complex algorithms that increase the resolution of images without distorting edges and contours. We present a novel image interpolation algorithm that uses the new contourlet transform to improve the regularity of object boundaries in the generated images. By using a simple wavelet-based linear interpolation scheme as our initial estimate, we use an iterative projection process based on two constraints to drive our solution towards an improved high-resolution image. Our experimental results show that our new algorithm significantly outperforms linear interpolation in subjective quality, and in most cases, in terms of PSNR as well.
机译:随着现代处理器的计算能力的不断提高,使用更健壮且计算复杂的算法来提高图像分辨率而又不会扭曲边缘和轮廓线已变得可行。我们提出了一种新颖的图像插值算法,该算法使用新的Contourlet变换来提高生成图像中对象边界的规则性。通过使用基于小波的简单线性插值方案作为我们的初始估计,我们使用基于两个约束的迭代投影过程来推动我们的解决方案朝着高分辨率图像的方向发展。我们的实验结果表明,在主观质量上,以及在大多数情况下,在PSNR方面,我们的新算法明显优于线性插值。

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