灰度等级少、对比度低的降质图像增强问题。
The image enhancement problem for degraded images with less gray levels and low contrasts.
加入特定约束得到的各种特定约束复原方程均能有效的复原空间移变降质图像。
And the restoration equation with specific constraint can restore space-variant blurring image effectively.
为了从降质图像中去除天气的影响，提出改进的最小失真意义下图像去雾算法。
In order to remove the effect of weather in degraded image, this paper proposes an improved image defogging algorithm by minimum distortion.
周期性误差是匀速直线运动降质图像复原中普遍存在的现象，它严重影响复原图像质量。
Periodic error commonly appear in restoring uniform motion blurred picture, its appearance degrade the quality of restored image heavily.
所谓盲恢复就是利用成像系统的部分信息，根据降质图像来恢复出清晰图像和模糊因子的图像恢复过程。
Blind image Restoration is the process of estimating both the true image and the blur from the degraded image characteristic using partial information about the imaging system.
若把成像系统作为线性空变系统来进行处理，根据等晕成像原理，如将降质图像分割为不同区域进行复原的话，则可以有效地提高图像的恢复效果。
The result will be improved if the degraded image is divided into regions to be restored according to the isoplanatic theory, on the basis of that the system is a linear variant one.
由于大气湍流等引起的光学畸变和光学系统本身的限制，使得获取的目标图像出现模糊和降质。
Because of optical distortion induced by atmosphere turbulence and limitation of optical devices, acquired images of space object are blurred and degraded.
在视频图像获取过程中，由于噪声对图像序列的降质，需要设计实时噪声滤波器。
For the degradation of image sequence due to noise, the temporal noise filter is designed during video image acquisition process.
然后，系统地对降低X射线数字图像质量的因素进行了研究，并应用图像增强和图像复原的方法对降质X射线数字图像进行处理。
Then, the factors degrading image quality of X -ray digital image are studied systemically, the method of image enhancing and image restoration is applied to degraded X -ray digital image.
盲图像恢复就是在点扩散函数未知情况下从降质观测图像恢复出原图像。
Blind image restoration is to recover the original image form the observed degraded image with unknown the Point Spread Function (PSF).
有资料表明，在当前的技术状态下，只有预先了解引起图像降质的原因，对无参考图像进行质量判别才是可行的。
Furthermore, there are no references for many aerial images and it is feasible to evaluate image quality only by knowing the cause of degrading image quality.
对其复原的目的在于补偿图像降质，使恢复后的图像尽可能地接近原始图像，为此要对恢复图像的质量进行评价。
The purpose of restoration is to compensate for image degradation, so that the restored image is as close as possible the original image. So the quality of restored image should be evaluated.
对其复原的目的在于补偿图像降质，使恢复后的图像尽可能地接近原始图像，为此要对恢复图像的质量进行评价。
The purpose of restoration is to compensate for image degradation, so that the restored image is as close as possible the original image. So the quality of restored image should be evaluated.
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