中文说明:
数字图形处理实验例题 造成图像退化的原因很多,大致可分为以下几个方面:
(1)射线辐射、大气湍流等造成的照片畸变。
(2)模拟图像数字化的过程中,由于会损失部分细节,造成图像质量下降。
(3)镜头聚焦不准产生的散焦模糊。
(4)成像系统中始终存在的噪声干扰。
(5)拍摄时,相机与景物之间的相对运动产生的运动模糊。
(6)底片感光、图像显示时会造成记录显示失真。
(7)成像系统的像差、非线性畸变、有限带宽等造成的图像失真。
(8) 携带遥感仪器的飞行器运动的不稳定,以及地球自转等因素引起的照片几何失真。
数字图形处理实验例题 造成图像退化的原因很多,大致可分为以下几个方面:
(1)射线辐射、大气湍流等造成的照片畸变。
(2)模拟图像数字化的过程中,由于会损失部分细节,造成图像质量下降。
(3)镜头聚焦不准产生的散焦模糊。
(4)成像系统中始终存在的噪声干扰。
(5)拍摄时,相机与景物之间的相对运动产生的运动模糊。
(6)底片感光、图像显示时会造成记录显示失真。
English Description:
There are many reasons for image degradation in digital image processing experiments, which can be roughly divided into the following aspects: < / P > < p > (1) photo distortion caused by radiation and atmospheric turbulence. < / P > < p > (2) in the process of analog image digitization, due to the loss of some details, the image quality will decline. < / P > < p > (3) defocus blur caused by lens focusing inaccuracy. < / P > < p > (4) noise interference always exists in the imaging system. < / P > < p > (5) when shooting, the relative motion between the camera and the scene produces motion blur. < / P > < p > (6) when the negative film is sensitive and the image is displayed, the recording and display will be distorted. < / P > < p > (7) image distortion caused by aberration, nonlinear distortion and limited bandwidth of imaging system. < / P > < p > (8) the motion instability of the aircraft carrying remote sensing instruments and the geometric distortion caused by the earth rotation.