Keeps my OpenCV codes.
OpenCV installation Basic Programming OpenCV Displaying an image Creating Patterns 1. A Red square inside an image. 2. A Square image coloured Red above the principal diagonal and black below it. Increasing Brightness of an image
Homework Displaying water image of a picture Creating a chess board
Converting a Binary Image to Grayscale image using average of BGR colour intensities using formula 0.587G + 0.299R + 0.114B Converting a Grayscale Image to Binary image using manual Thresholding Pixel Dilation Pixel Contracion Basic Filtering using mean of 33 kernel Using median of 55 kernel using Gaussian Kernel Mouse-click functions
Homework Draw a Histogram having intensity in x-axis and no. of pixels having that intensity in y-axis Converting a Grayscale Image to Binary image using Automatic Thresholdng such that 50% of image's pixels are white and rest are black.
Edge Detection using Sobel Filters using max-min in 3X3 kernel using canny edge detector Blob Detection Erosion and Dilation Track bar creation
Homework Draw a BGR Histogram having intensities of each colour on x-axis and no. of pixels having those intensities on y-axis.
1.Mid-Evaluation 2.To find out center of mass of each blob in a binary image 3.Converting an RGB image to binary using four trackbars to control R,G,B colour intensities and also the error range 4.Applying isValid function on Meanfilter program 5.Sinusoid representation of a binary image in Hough space
Retrieving a binary image back from its sinusoidal representation Basic video processing using webcam input.
Path planner using DFS involving a stack. Basic Autonomous
DFS(start,end) { s.push(start); while(start!=end) { temp=s.top(); for( ) { for( ) { current; if(temp is not visited && no obstacle) { DFS(current,end); pop(); } } } …..
BASIC AUTONOMOUS
Microcontroller: brain of the bot Supply to DC motor: battery or power supply(adapter) Difference between microcontrollers and microprocessors: Microcontrollers are self-sufficient with inbuilt RAM, whereas microprocessors have external RAM and hence are not self-sufficient. Sensor-->Microcontroller-->Actuator 4 types of commands in Arduino IDE: digitalWrite() digitalRead() analogWrite() analogRead()
void setup() { pinMode(13,OUTPUT); } void loop() { digitalWrite(13,HIGH); delay(1000); digitalWrite(13,LOW); delay(1000); }
Problem Statement:
"Perform Fillbucket operation like in MS-Paint" "Counting the number of goals in Robosoccer"
Fillbucket:
First used a mouse-click function to get the coordinates of the points at which the mouse is clicked. Then start a DFS until all the white pixel inside the borders are coloured. I used a condition that if mouse is clicked on the borders than it will perform no task.
Robosoccer: First I made a program to find the coordinates of the goal post Then I extracted the orange colour of the ball Using the colour of the ball I kept track of its movement I declared an array(for each team) which stores a value for each frame. It stores 1 if ball inside the goal post and else 0 The point at which the array has a change in value from 1 to 0 is declared as a goal