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Utilizing Multiple Subpixel Shifted Images in Subpixel Mapping With Image Interpolation

机译:在带有图像插值的子像素映射中利用多个子像素移位的图像

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In this letter, multiple subpixel shifted images (MSIs) were utilized to increase the accuracy of subpixel mapping (SPM), based on the fast bilinear and bicubic interpolation. First, each coarse spatial resolution image of MSI is soft classified to obtain class fraction images. Using bilinear or bicubic interpolation, all fraction images of MSI are upsampled to the desired fine spatial resolution. The multiple fine spatial resolution images for each class are then integrated. Finally, the integrated fine spatial resolution images are used to allocate hard class labels to subpixels. Experiments on two remote sensing images showed that, with MSI, both bilinear and bicubic interpolation-based SPMs are more accurate. The new methods are fast and do not need any prior spatial structure information.
机译:在这封信中,基于快速双线性和双三次插值,利用多个子像素移位图像(MSI)来提高子像素映射(SPM)的准确性。首先,对MSI的每个粗糙的空间分辨率图像进行软分类以获得类分数图像。使用双线性或双三次插值,MSI的所有分数图像都将上采样到所需的精细空间分辨率。然后将每个类别的多个精细空间分辨率图像进行积分。最后,集成的精细空间分辨率图像用于将硬类标签分配给子像素。在两个遥感图像上进行的实验表明,使用MSI,基于双线性和双三次插值的SPM都更加准确。新方法快速并且不需要任何先前的空间结构信息。

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