像元尺寸 meaning in English
pixel size
Examples
- The results indicate that the envelope method is more effective in actual application . and the recording distance limitations due to the stated pixel number , pixel size and laser wavelength are discussed in detail
通过对图像采样的分析，结合采样定理，给出了当图像像素总数、像元尺寸、记录波长都确定时，对衍射距离的限制条件。 - Super - resolution restoration of video sequences is useful and often critical in many existing applications . some imaging systems employ detector arrays that are not sufficiently dense to meet the nyquist criterion during image acquisition
当ccd相机在对空间频率较丰富的景物进行采样时，由于ccd像元尺寸的限制，图像分辨率低，混频现象有时很严重。 - For the hyper accuracy interpolation technique , which resolves the accuracy limitation of pixel physical size , derives out the star spot interpolation accuracy limitation based on the star spot mathematical model and photoelectric statistics
针对克服像元尺寸对测量精度限制的超精度内插细分技术，在建立了星点光斑数学模型的基础上，利用光电统计理论，推导了星点光斑内插细分精度的极限公式。 - It is appropriate commonly that the resolution of ccd sensor imaging is 1 . 8 times of the pixel dimension , in the mean while the mtf decreases 11 % , because the mtf is bigger , the other parts are easier to be made and the image shows the characterization of the object well . 2
一般情况下取ccd探测器的目标影像分辨力是其像元尺寸的1 . 8倍较为适中，因为这时的mtf数值较大对系统的其它环节的指标压力较小，且图像较好地反映了目标图形的特征，此时其光学调制度传递函数mtf下降了11 。 - From the results of these experiments , we know that the improvement effect is clear when the enhancement ratio is 1 . 5 . but the enhancement ratio of 2 . 5 is difficult to be reached because of the optical dispersion . it shows that the enhancement ratio is limited by the size of ccd sensor ' s cell and optical dispersion
而由于ccd像元尺寸与弥散斑相差不多，要想获得分辨率提高2 . 5倍的高分辨率图已经很困难，说明反演解析法实际上对分辨率的提高是有一个上限的，这和弥散斑与ccd感光像元间的大小比例有关。