The All in the Family story makes one wonder how many other gems never had the chance to become classics. The good news, however, is that there are plenty of shows that have stood the test of time. With the help of Wikipedia, and a little math, I found a list of the 20 longest-running network TV shows.
Convolution with a Gaussian kernel (filter) guarantees a non-negative result, so such function maps non-negative values to other non-negative values (f:R+âR+). The result is therefore always another valid image. In general, frequency rejection in Image processing in not as crucial as in 1D signals.
Activated Charcoal for Filters. 1  Because of activated charcoal's incredible adsorption ability, it is an ideal choice for air and water filters. When used appropriately, charcoal filters will effectively clean the air and water by electrostatically binding pollutants to its vast surface area. Many people use activated charcoal filters in outdoor ponds and aquariums to keep the water clean and the marine life healthy.