digital processing visualizer

Digital image processing performs geometric operations on the image, including image translation, image rotation, image scaling, image placement, and image mirroring. Image Translation: /*************************************** *********************************** Function name: Translation ()* Function parameters:* LPSTR lpSrcStartBits refers to the pointer to the starting pixel of the source DIB* Long lWidt

image stretching function I wrote, stretching the result of the Laplace operation to [0,255], the function segment as follows,//*****************************////Scale the pixels to [0 255]//*****************************//voidTable_scale (int* table,uchar* result,intN) { intMin = table[0]; intmax = table[0]; for(intI=0; i) { if(min>Table[i]) {min=Table[i]; } if(maxTable[i]) {Max=Table[i]; } } for(intI=0; i) {Result[i]= (Uchar) (255* (table[i]-min)/(max-min)); }}Simula

in your program needs to be used frequently, the use of the function handle, you will improve the speed.2, the use can be as convenient as the variable. For example, after I run this directory, I create a function handle to this directory, and when I go to the other directory, the function handle that I create can be called directly without having to copy the function file. Because the function handles you created already contains the path, for example, I created a funH_fun=str2func (' Rei ');Y

1function [] =PicSmooth0 (A, s)2%PicSmooth0 here to show a summary of this function3%picsmooth0 (A,s) A is the image matrix S3 Transformation Matrix4%detailed instructions are shown here5[m,n,a]=size (A);6 ifA = =37b=Rgb2gray (A);8 Else9b=A;Ten End Oneb=Double(B); % prevent overflow Ap=zeros (m,n); -k=0; -sum=0; the[m,n]=size (s); - if(m~=3|| n~=3) -fprintf ('Please enter the correct 3*3 spatial domain smoothing template'); - Else + forI=1:3 - forj=1:3 +sum=sum+s (i,j); A E

This article introduces the content is about PHP into a rounding, rounding, retain two decimal places, and so on digital processing method Daquan, has a certain reference value, now share to everyone, there is a need for friends can refer to PHP takes integer functions commonly used four methods, the following collection of four functions, often used to take the whole function, a small sum today! Actually

] =NewUchar [w *h];7 }8}The subsequent access is directly labeled with the array. After running, the discovery time saves a lot, takes only 30-40 seconds. So it should be that each cycle creates a new vector that wastes time, and if you create three vectors before the loop, it's time to save up the reuse of the chunks that are processed every single line. But I think the fixed length of the array time will be less, so temporarily no longer experiment vector improvement.It is also importa

frequency-domain Filter Using a spatial filter H = freqz2 (H, R, c) --- H is the space filter, and R and C are the size of the generated Frequency Domain Filter. Note that the DC component of H is in the center of the frequency rectangle; --- Therefore, F obtained from the Fourier transformation fft2 (F, R, c) of image F cannot be directly multiplied. The DC component of F is in the upper left corner) inverse center operation; --- The center spectrum is more suitable for visualization. In no

]); } printf ("\ n"); } Q1=x[n-1]; Q2=y[n-1]; for(i=0; i) {W=6.28348530718/n*i; W1=cos (w); W2=-sin (w); C1=1.0-a1*w1+a2*W2; C2=a1*w2+a2*W1; C=c1*c1+c2*C2; D1=1.0-a1*q1+a2*Q2; D2=a1*q2+a2*Q1; A[i]= (C1*D1+C2*D2)/C; B[i]= (C2*D1-C1*D2)/C; } printf ("\ Theoretical dft\n"); for(i=0; i2; i++) { for(j=0;j2; j + +) {printf ("%10.7f+j%10.7f", a[2*i+j],b[2*i+J]); } printf ("\ n"); } FFT (X,y,n,1); printf ("\ndft\n"); for(i=0; i2; i++) { for(j=0;j2; j + +) {printf ("%10.7f+j%10.7

=gauss (mean,sigma,s); printf ("%13.7f", x); } printf ("\ n"); } returna.exec ();}Gauss.c#include DoubleGaussDoubleMeanDoubleSigmaLong int*s) { inti; Doublex, y; DoubleUniformDouble,Double,Long int*); for(x=0, i=0;i A; i++) x+=uniform (0.0,1.0, s); X=x-6.0; Y=mean+x*Sigma; return(y);}Uniform.cdouble uniform (double A,double B,longint *seed) {double t; *seed=2045* (*seed) +1; *seed=*seed-(*seed/1048576) *1048576; t= (*seed)/1048576.0; t =a+ (b-a) *t; return (t);}

coordinateY2,X2 represents the coordinates of the second control pointY3,X3 represents the third control point coordinateThe weight represents the weight of the middle control point and is used to control the curvature of the curve. from Import Draw,data Import Matplotlib.pyplot as pltimg=Data.chelsea () RR, CC=draw.bezier_curve (150,50,50,280,260,400,2) Draw.set_color (img,[rr,cc],[255, 0,0]) plt.imshow (Img,plt.cm.gray)6. Draw Hollow CircleAnd the previous circle is the same, but the front is

... ）Method: Methods used to determine adaptive thresholds, with ' mean ', ' generic ', ' Gaussian ' and ' median '. Default to Gaussian when omittedThis function accesses the image directly after a threshold, not the threshold value. fromSkimageImportdata,filtersImportMatplotlib.pyplot as Pltimage=Data.camera () DST=filters.threshold_adaptive (image, 15)#returns a threshold imagePlt.figure ('Thresh', Figsize= (8,8)) Plt.subplot (121) Plt.title ('Original Image') plt.imshow (Image,plt.cm.gray)

name, and the second parameter represents the array variable that needs to be saved. from Import io,dataimg=Data.chelsea () io.imshow (IMG) io.imsave ('d:/cat.jpg' , IMG)Iv. Picture InformationIf we want to know some picture information, we can display it in the upper right corner of the Spyder Editor:You can also print the output directly in a procedural way fromSkimageImportio,dataimg=Data.chelsea () io.imshow (IMG)Print(Type (IMG))#Display TypePrint(Img.shape)#Display sizePrint(Img.shape[0])

array for(inti = 0; i ) {fw.write (chararray[i]);//writes one to the specified text at a timeFw.flush ();//Refresh Stream} fw.close ();//Close the stream } PublicString Cutnumber (String str)//cut strings, cut 3 at a time{String str1= Str.replaceall ("", "");//The calling method replaces all the spaces in the stringStringBuffer SB =NewStringBuffer (); for(inti = 0; I ) {String Sub= Str1.substring (i, i + 3);//CuttingSb.append (sub);//ConnectionSb.append ("");//separated by space

, Enum_op_time) Endl;}Object-c: Because there is Xcode, the second-largest editor of the Earth (vs first), writing code is still cool. Unlike C + +, where the enum ENUM_OP op is defined for the parameters in the enumeration, it is important that generics are not fully supported. This is a gap.////main.m//Hiworld////Created by Linson on 2018/8/19.//Copyright 2018 Linson. All rights reserved.//#importenumenum_op{Enum_op_add, Enum_op_minus, Enum_op_time, enum_op_divide};intNumbercaculate (intAintBe

Effect Chart: PS Tutorial Artwork: 1, first open the channel panel, copy the green channel, as shown in the picture. 2, return to the Layers panel, paste the green channel into the new layer, and set the layer blending mode to overlay, as shown in the figure. 3, add a layer mask, use the black "brush tool" to smear the pictures outside the trees, as shown in the picture. 4, stamped layer, using the "image-adjust-selectable color" c

In the field of signal processing, the gain is divided into digital gain and analog gain, the digital gain is used to manipulate discrete digitized sampled values, and analog gain directly operates on a continuous analog signal waveform. For most high-end stereos today, the volume is adjusted using analog gain, because there are some limitations to

A batch processing of digital rain, old questions For beginnersIt is mainly used to learn about batch processing.1. Use of Random Variables2. Variable superpositionBelow isSource code:CopyCodeThe Code is as follows: @ echo offColor 0a: StartSet num = 0Set "echos =": NumSet/A a1 = % random % 3If "% a1 %" = "1" set "a1 ="If "% a1 %" = "2" set "a1 ="If "% a1 %"

'); > Ftt_sig = FFT (SIG, 512); % perform a 512-point fast Discrete Fourier transformation for the SIG signal to zero> P = ftt_sig. * conj (ftt_sig)/512; % calculate the power spectral density of the signal> F = 1000 * ()/512; % set the frequency conversion range> Subplot (1, 2 );> Plot (F, ftt_sig () % to plot the power spectrum density distribution > Title ('power spectral density fig ') Fftfilt-FFT-based FIR Filter Usage Y = fftfilt (B, X) The function uses the stacked addition method for F

Sontia, a British digital audio processing technology company, aims to "make speaker sound better ". Sontia developed an innovative algorithm based on acoustic principles to present a natural and comfortable sound field. Now, in the iPod base system, flat panel TV, laptop, active speaker, MP3 player, sontia's new-generation digital audio

inside.Give a few examples,Practice it yourself, such as writing red, green, blue, yellow, pink, gray, and then quickly writing out the color of the main hue of your mouse pad. If it's black, write a purple one. Anyway, a little practice.Since 8 can say, then from red to black into 16384 part, that is , said, the line is not OK, of course. What's the use of dividing the number of pieces? ReferenceHttp://wenda.hexun.com/question/34986.htmlPart of the digita