JAVA数字图像处理，对图像进行采样！图像Miss.jpg为256×256，采样得N值可以是256，128，64，32，16等-JAVA digital image processing, image sampling! Miss.jpg images for 256 × 256, sampling a N value can be 256,128,64,32,16, etc.

The Shannon/Nyquist sampling theorem tells us that in order to not lose information when uniformly sampling a signal we must sample at least two times faster than its bandwidth. In many applications, including digital image and video cameras, the