如何评价一种图象压缩方法对图象量测性能的影响，目前还没有切实可行的方法。目前还没有切实可行的方法。本文提出一种评价图象压缩对解压图象量测性能影响的方法，该方法不仅与视觉效果的评价准则相一致，而且能够定量地给出压缩方法对解压图象上象素几何位置的影响程度，因而适用于高精度的数字摄影测量和其它高精度的数字图象处理领域。

UP to now, there is no any practical and available method to assess the influence of image compression on the image measurement quality. This paper proposes a reliable method which not only agrees with the assessment criterion of the visual effect but also can quantitively get the geometrical position distortion under the influence of image compression. Therefore it is suitable for high precision digital photogrammetry and other high precision digital image processing.