Yes, you can sharpen a digital image in software.

是的，你可以用软体来增加影像锐利度。

Digital image steganography does have some drawbacks, though.

但是，数码图像隐写术仍然有一定缺点。

DustCleaner: Detect and remove the dust spots in digital image.

DustCleaner：检测并移除数码图像上的尘点。

Digital image processing is the subject with bright prospects.

数字图像处理是一门具有巨大发展前景的学科。

Typically there are two variants of digital image capture devices.

通常有两个变种的数字图像捕捉设备。