光学模糊 meaning in English

optical dimming

As a result , digital images usually suffer from aliasing due to undersampling , loss of high - frequency detail due to relative motion or out - of - focus . supperresolution involves up - conversion of the input sampling lattice as well as reducing or eliminating aliasing and bluring
因此，通常数字图像因欠采样( undersampling )而引起的信号混叠，因低分辨率传感点扩散( psf ： pointspreadfunction )而造成的高频部分、丢失，以及因相对运动或散焦造成的光学模糊等因素而受损。