空間頻率人們所熟悉的時間頻率是用單位時間內某物理量(如交變的電流、電壓、波動或機械震動等)周期性變化的次數定義的,單位為周/秒。類似地,空間頻率的定義是物理量(像的亮度)在單位空間距離內周期性變化的次數,即 fx = d j(x)/dx(周/米) (02-02-6)式中,fx表示亮度訊號在x方向的空間頻率,x是空間距離變數,j(x)表示亮度訊號沿x方向的相位變化。以圖02-02-13(a)所示的正弦光柵為例,如果光柵亮度在1厘米內變化10次,那麼它的空間頻率為fx =
ProblemTic-Tac-Toe-Tomek is a game played on a 4 x 4 square board. The board starts empty, except that a single 'T' symbol may appear in one of the 16 squares. There are two players: X and O. They take turns to make moves, with X starting. In each
Shaping RegionsN opaque rectangles (1 <= N <= 1000) of various colors are placed on a white sheet of paper whose size is A wide by B long. The rectangles are put with their sides parallel to the sheet's borders. All rectangles fall within the
Pearson product-moment correlation coefficientFrom Wikipedia, the free encyclopediaJump to: navigation, searchIt has been suggested that this article or section be merged into Correlation. (Discuss)This article may require cleanup to meet
Code:using System; using System.IO; using System.Collections.Generic; using System.Linq; using System.Data; using System.Text; using System.Runtime.Serialization.Formatters.Binary; namespace SimpleDataSet { class Program