Lineshift text watermarking algorithm, strong robustness, use of boundary.
行移文本水印算法，强鲁棒性，边界扫描采用投影法。
2
And then lineshift frequency of TDICCD and exposure time was researched to get the influence of orbit parameters on image.
接着对TDICC D行转移频率与工作曝光时间进行研究，分析了轨道参数对成像的影响。
3
But when we use phase shift compensation technique and make the lineshift rate of the camera match the rate of the image, we can get very distinct image.