readability formulas

During image processing, we generally use RGB space, but in some special cases, we also use other color spaces. This article mainly introduces some common color space concepts and conversion formulas. The essence of color is a light wave. It exists because there are three entities: Light, observed object, and observer. The human eye uses color as a light wave formed by the observed object absorbing or reflecting different wavelengths. For example, whe

, and later encountered a data, dropped into this plane, see in the straight line which side, is which category.For example x+y-2=0 this line, we put the data (x, y) into, as long as the x+y-2>0 is a class, X+y-2And so on, there are three-dimensional, four-dimensional, n-dimension attributes of the classification, so the structure may not be a straight line, but the plane, super-plane.A three-dimensional function classification: x+y+z-2=0, this is a classification of the plane.Sometimes, the lin

+ (nsstring*) Changetobinarysystem: (nsstring*) Number {Nsinteger num = [number intvalue];Nsinteger remainder = 0;Nsinteger divisor = 0;NSString *[email protected] "";while (num!=0) {remainder = num%2;divisor = NUM/2;num = divisor;prepare = [Prepare stringbyappendingformat:@ "%ld", remainder];}NSString *[email protected] "";int strlenht = prepare.length%4;if (strlenht==1) {result = @ "000";}else if (strlenht==2) {result = @ "00";}else if (strlenht==3) {result = @ "0";}for (Nsinteger i = prepare.

distribution is expanded to the multi-dimensional Dirichlet distribution (Dirichlet distribution). The multi-dimensional distribution is the multi-dimensional distribution. The Dirichlet distribution function is as follows: Multiple distribution functions are as follows: K indicates k dimension. And are both constant coefficients. They do not look at the constant coefficients. The Dirichlet function has the same form as the multiple distribution functions. Therefore, the posterior distribution

Question: Returns the character a, and returns a (n, m) = n! /(N-m )! The character C is given, and the combination of C (n, m) = N is required! /(M! * (N-m )!) Http://acm.hdu.edu.cn/showproblem.php? PID = 1, 1570 AC code: # Include Using namespace STD;Long long F (int n ){Long long S = 1;If (n = 0) return S;For (INT I = 1; I Return S;}Int main (){Char C;Int n, m, T;Cin> T;While (t --){Cin> C> N> m;If (C = 'A') cout If (C = 'C') cout }} Hdu1570 (Application of arrangement and co

DescriptionThe numbers of offices in the new building of the Office of the IT city would have lucky numbers.Lucky number is a number, consists of digits 7 and 8 only. Find the maximum number of offices in the new building of the tax Office given that a door-plate can hold a number not Lon GER than n digits. InputThe only line of input contains one integer n (1≤ n ≤55)-the Maximum length of a number t Hat a door-plate can hold.OutputOutput one integer-the maximum number of offices, than can ha

DescriptionIT developing computer games decided to upgrade its-to-reward its employees. Now it looks the following. After a new game release users start buying it actively, and the company tracks the number of sales with precision to each Transaction. Every time when the next number of sales are not divisible by any number from 2 to Ten every developer of this game Gets a small bonus. A game designer Petya knows that's the company is just on to release a new game This was partly developed by him

First, add the following code to the first page of the blog Park's HTML:Scripttype= "Text/x-mathjax-config">MathJax.Hub.Config ({tex2jax: {inlinemath: [['$','$'], ['\\(','\\)']], Processescapes:true},tex: {equationnumbers: {autoNumber: ["AMS"], Uselabelids:true } }, "Html-css": {linebreaks: {automatic:true}, Scale: -}, SVG: {linebreaks: {automatic:true } }});Script>Scripttype= "Text/javascript"src= "Https://cdn.mathjax.org/mathjax/latest/MathJax.js?conf

the title of the automatic numbering on the basis of the first to establish a formula style,The main thing to do is the operation of the tab stop, this step is to let the formula Center, the label on the right.The bottom left-hand format, select the tab stop appears in the interface, first choose the center, and then see how you word Center is the number of characters (through the grid lines can be seen), generally 23, I set here to 23, and then select the right, I set to 46, and then OK on the

lengthSqlinput = sqlinput.substring (0, maxLength); } returnSqlinput; } /// ///string Encoding/// /// /// Public Static stringHtmlEncode (stringinputdata) { returnHttputility.htmlencode (Inputdata); } /// ///set Label to display encode string/// /// /// Public Static voidSetLabel (Label lbl,stringtxtinput) {lbl. Text=HtmlEncode (txtinput); } Public Static voidSet

covariance matrix could be computed in such a way that the sample matrix is centered first. That is, each dimension subtracts the mean of the dimension, so that the mean value on each dimension is 0, and then the new sample matrix is directly multiplied by its transpose. Then divide (N-1) to be able. In fact, such a method is also from the previous formula channel, just understand is not very intuitive, but in the abstract formula derivation is not often used!The same gives the MATLAB code impl

Don't get it wrong. It is not described in the international standard mathematical xml, which is implemented through the support of the latest browser. I just tried to use xml + xslt and simple html for display. It's just a preliminary idea to share with you. Maybe a lot of people have made similar attempts before. It doesn't matter. I just want to talk about my thoughts.The format of mathematical formulas is diverse, such as limit and poi

dictionary derivation formulaDictionary derivation and list derivation are used in a similar way, except that the brackets should be changed to curly braces. The direct example illustrates:Example one: Capitalization key mergeMcase = {'a': 10,'b': 34,'A': 7,'Z': 3}mcase_frequency={k.lower (): Mcase.get (K.lower (), 0)+Mcase.get (K.upper (), 0) forKinchMcase.keys ()ifK.lower ()inch['a','b']}Printmcase_frequency#Output: {' A ': +, ' B ':Example two: Quick change of key and valueMcase = {'a'b': in

A recent project needs to manipulate EXCEL.The principle can be borrowed from the following blog:Http://blog.sina.com.cn/s/blog_6163bdeb0102dxcy.htmlI used the most commonly used OLE automation method, which suggested that you read the documentation carefully and provide more functionality. Then in the design encountered a problem, open Excel, exit after the prompt "whether to save the ...." Changes, Microsfot Excel recalculates the formula when you open the file that was last saved by an earli

In the CSS page layout encountered a bug, please read the following carefully, very easy to remember, do not know which man put CSS bug into jingle! Look good, remember?First, IE border if not, it should be noted that the height setting has been forgotten;Second, the floating generation has the reason, if the parent layer contains live, immediately after floating to clear, the container naturally show therein;Three or three pixel text slow move don't panic, height set to help you busy;Four, comp

Code Listing 1:1 Public voidtest1 () {2 for(inti = 1; I ){3 for(intK = 1; K ){4System.out.print ("\ t");5 }6 for(intj = i; J ){7System.out.print (i+ "x" +j+ "=" +i*j+ "\ T");8 }9 System.out.println ();Ten } One}Print:Code Listing 2:1 Public voidtest2 () {2 for(inti = 1; I ) {3 for(intj = 1; J ) {4System.out.print (i+ "x" +j+ "=" +i*j+ "\ T");5 }6 System.out.println ();7 }8}Print:　　C

A total of 15 priority levels:1 () []. -2! ~-(minus) + +-- (take variable address) * (type) (mandatory type) sizeof3 */%4 +-5 >> 6 > >= 7 = = =!8 9 ^10 |12 | |13?:+ = = *=/=%= |= ^= = >>= 15,It's just a lot of it. Binding: 2 13 14 is from right to left the other is left to rightBracket member first; The parentheses operator [] () member operator. -The whole monocular second; All monocular operators such as + +,--、 + (positive),-(negative), pointer operations *, Multiplication Yozo, plus minus fo

Some useful tips/small formulas/Xuan Xue optimization (fog, tips/Xuan Xue) 1. There are gcd (x1-x2, y1-y2)-1 points on the line segment (excluding the endpoint) consisting of (x1, y1) (x2, y2. 2. After two longlong values are multiplied, % of a number can be used in the following ways to avoid high precision: Ll mu (ll a, ll B) {ll r = 0; for (; B; a = (a 3. $ \ sum \ limits _ {I = 1} ^ n I ^ 2 = \ frac {n (n + 1) (n + 2)} {6} $ 4. Adding

1. As shown in the following figure, the excel table contains data and formulas. Now we need to copy the data.2. You can see that the data in the column of the total score is generated using the formula.3. Select the data to be copied and right-click the copy option in the pop-up menu, as shown below.4. After copying the file, right-click the cell to be pasted and click the paste option in the pop-up menu, as shown below.Then the formula is copied tog

Step 1: first open the Windows 7 system, then click "Start"-"attachment" in the lower right corner, and then find the "run" box, of course, you can also use the win + r key to quickly open it, and then enter the mip command and press enter, the effect is as follows.Step 2. In the open "mathematical formula editor", we can switch to the "Handwritten" formula for input.Step 3: We can preview and find that we can perform operations here, as shown in