krishnan793

int RED_LED = 12;
int BLUE_LED = 13;
int GREEN_LED = 14;


void setup() {
  // Initialisation
  pinMode(RED_LED,OUTPUT);
  pinMode(BLUE_LED,OUTPUT);
  pinMode(GREEN_LED,OUTPUT); 

krishnan793

#include<highgui.h>
#include<cv.h>

using namespace cv;

int main()
{
        Mat A,B;
        A=imread("boy.jpg");                        //Read the image file
        namedWindow("Boy", CV_WINDOW_AUTOSIZE );    //Create a new window to show  the image. Name the window as "boy"

krishnan793

value=$(cat /sys/bus/iio/devices/iio:device0/in_voltage0_raw)
value=$(echo $value*0.0004394 | bc)
echo "$value V"

krishnan793

#include<stdio.h>
#include<unistd.h>

void Read(char *switch_value, char *val);
void Write(char *switch_value, char *val);
void Blink(char *led_value, int delay);

int main()
{
	char *led_direction="/sys/class/gpio/gpio23/direction";

krishnan793

#include<stdio.h>
#include <unistd.h>

int main(int argc, char* argv[])
{
	if(argc!=3){
		printf("Syntax: %s <no_of_times_to_blink> <delay_us>\n",argv[0]);
		return 0;
	}
	int delay=atoi(argv[2]);

krishnan793

while true
do	
	echo 1 > /sys/class/gpio/gpio23/value
	cat /sys/class/gpio/gpio23/value
	sleep 1
	echo 0 > /sys/class/gpio/gpio23/value
	cat /sys/class/gpio/gpio23/value
	sleep 1
done

krishnan793

#include<stdio.h>

void Dec2Hex(int no){
    int hex=0;
    if(!no)
        return;
    else {
        hex=no%16;
        Dec2Hex(no/16);
    }

krishnan793

%% Power-Law Transformation
% Equation s=cr^a
A=imread('401566.jpg');
A=rgb2gray(A);
c=1;
a=2.2;
imshow(uint8(c*(double(A).^a)));

krishnan793

%% Log Transform
% Equation s=c*log(1+r)
A=imread('401566.jpg');
A=rgb2gray(A);
imshow(log(double(A)+1));

krishnan793

A=imread('401566.jpg'); %Change 401566.jpg with your image file
A=rgb2gray(A);
imshow(255-A); %(L-1)-r;L=256(8 bit gray scale)