undersampled meaning in English

采样过疏的
抽样不足的
欠抽样的

In these data , there are considerable image data of the same area . but limitted by the manufacturing process of imagery equipment , these images are the undersampled of scene
但由于成像设备硬件制造技术方面的原因，使得所获取的数字影像是地面信息的欠采样，从而得不到理想的高分辨率的图像。
This paper researches and improves two important algorithms to reconstruct high resolution images , with reduced aliasing , from a sequences of undersampled rotated and shifted frames . the reconstructed image resolution is from two to four times higher than the undersampled frames
本文研究和改进了运动补偿迭代算法和共轭梯度最优化迭代算法，从欠采样图像序列中复原出高分辨率的图像，使被重建图像的分辨率比欠采样帧提高了2 ~ 4倍。
It ' s the aim for many pepole to improve the image resolution . one of the proper approaches to the aim is the siginal processing based methods in software . it can recover the high resolution image from multiframe undersampled images
提高遥感影像的分辨率一直是人们追求的目标，实现这一目标的有效途径之一便是采用基于信号处理的软件方法，其基本原理是应用同一地区多幅重复观测影像之间的互补信息，用超分辨率重建算法恢复高分辨率图像。