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Matlab Code for Video Motion estimation

clc;

foregroundDetector = vision.ForegroundDetector('NumGaussians', 3, ...

'NumTrainingFrames', 50);

V=VideoReader('bac cifix 15 min.avi');

videoReader = vision.VideoFileReader('sample.avi');

for i = 1:150

frame = step(videoReader); % read the next video frame

foreground = step(foregroundDetector, frame);

end

imwrite(frame,'C:\Abhishek\Paper\BlockMatchingAlgoMPEG\Video_Velocity\new.jpg','jpg');

videoPlayer = vision.VideoPlayer('Name', 'Detected Subtitlis');

videoPlayer.Position(3:4) = [650,400]; % window size: [width, height]

se = strel('square', 3); % morphological filter for noise removal

referenceimage=imread('C:\Abhishek\Paper\BlockMatching\Video_Velocity\new.jpg');

X=zeros(2,121);

Y=zeros(2,121);

Z=zeros;

while ~isDone(videoReader)

frame = step(videoReader); % read the next video frame

% Detect the foreground in the current video frame

foreground = step(foregroundDetector, frame);

% Use morphological opening to remove noise in the foreground

filteredForeground = imopen(foreground, se);

%-----------------------SPEED ---------------------------%

frame2=((im2double(frame))-(im2double(referenceimage)));

frame1=im2bw(frame2,0.1);

[Labelimage]=bwlabeln(frame1);

stats=regionprops(Labelimage,'basic');

BB=stats.BoundingBox;

i=2; %fblasst for

X(i)=BB(1);

Y(i)=BB(2);

Dist=((X(i)-X(i-1))^2+(Y(i)-Y(i-1))^2)^(1/2);

Z(i)=Dist;

M=median(Z);

%disp(M);

%clc;

%disp('speed=')

Speed=((M)*(120/8))/(4);

%disp(Speed);

%SPEED = M ???????????

i = i + 1;

SE = strel('disk',6);

frame3=imclose(frame1,SE);

step(videoReader);

pause(0.05);

%if(i==121) end; ??

%-----------------------SPEED ---------------------------%

% Detect the connected components with the specified minimum area, and

% compute their bounding boxes

blobAnalysis = vision.BlobAnalysis('BoundingBoxOutputPort', true, ...

'AreaOutputPort', true, 'CentroidOutputPort', true, ...

'MinimumBlobArea', 150);

%bbox = step(blobAnalysis, filteredForeground);

[areas, centroids, bbox] = step(blobAnalysis, filteredForeground);

% Draw bounding boxes around the detected cars

result = insertShape(frame, 'Rectangle', bbox, 'Color', 'green');

% Display the number of cars found in the video frame

%ICI

disp(centroids);

disp(size(centroids));

numCars = size(bbox, 1); %cars ...

numCars_str = ['Frame:', num2str(size(bbox, 1))];

speed_str = [num2str(Speed),'KM/h'];

result = insertText(result,[10,10],numCars_str, 'BoxOpacity', 1, ...

'FontSize', 14);

for i=1:size(bbox, 1)

result = insertText(result,[centroids(i,1),centroids(i,2)], speed_str, 'BoxOpacity', 1, ...

'FontSize', 20);

end;

step(videoPlayer, result); % display the results

end;

release(videoReader); % close the video file

Abhishek posted in Technical

Post updated on: Sep 6, 2020 10:53:00 AM

Installing Apache Web server on Linux server

Apache http web server is open source. In this tutorial we will get to know the steps to install this in Ubuntu Server.
This steps are tested on Ubuntu 16.04. I have listed down some basic Linux commands also which you should be aware of.

1. Since this is Ubuntu so you need to update it before all types of installation

-sudo apt update

2. Install Apache server by running the below command.
- sudo apt install apache2

3. Once this is installed, try the below url to check if web server is running with default page without any issue. You can type your IP address instead of localhost.
- localhost:80/

4. If you see the above screen shot in your response then Apache web server is installed successfully. This is serving the default page created during installing from below location.
- cd /var/www/html

5. You can try to open the index.html file present here and update, same will reflect here localhost:80/
    Open and Edit file
   - vim index.html
    Type "i" to enter insert mode.
    Press ESC and then type ":wq!" then press Enter to save the changes and exit vim.

6. Now we will learn how to create a placeholder for any new site hosting. Suppose your site name is myexample

cd /var/www/myexample
nano index.html

Add any content in this file which you wants, I added below content.

7. Now let's configure the new site in default location of apache.
cd /etc/apache2/sites-available/

9. Create config for our domain
    sudo nano myexample.conf
    Add the email address in ServerAdmin email@myexample.com
    Add the server name as ServerName myexample.com
    Add the Document for the folder which you had already created