arvindpandi6
commented
7 years ago I ALSO USED IT TO GIVE LIVE VIDEO USING THE FOLLWOING CODE THE SAME PROBLEM PERSISTS EXISTS
include "opencv2/opencv.hpp"
include "led-matrix-c.h"
include
include
include
include
include
//#include
void rotate(Mat& src, double angle, Mat& dst) { Point2f pt(src.cols/2., src.rows/2.); Mat r = getRotationMatrix2D(pt, angle, 1.0); warpAffine(src, dst, r, cv::Size(src.cols, src.rows)); } int main(int, char*) { /////////////////////////////////////////////////////////// struct RGBLedMatrixOptions options; struct RGBLedMatrix matrix; struct LedCanvas *offscreen_canvas; int width, height; int x, y, i;
memset(&options, 0, sizeof(options)); options.rows = 32; options.chain_length = 2; options.parallel=1; matrix = led_matrix_create_from_options(&options, NULL, NULL); if (matrix == NULL) return 1; offscreen_canvas = led_matrix_create_offscreen_canvas(matrix);
led_canvas_get_size(offscreen_canvas, &width, &height);
fprintf(stderr, "Size: %dx%d. Hardware gpio mapping: %s\n", width, height, options.hardware_mapping); ///////////////////////////////////////////////////////////
VideoCapture cap(0); // open the default camera if(!cap.isOpened()) // check if we succeeded return -1;
Mat edges;
for(;;)
{
Mat finale;
cap >> finale; // get a new frame from camera
imshow("edges",finale);
if(waitKey(1) >= 0) break;
resize(finale,finale,Size(32,64));
// imshow("resized",finale);
int rows = finale.rows;int cols = finale.cols; int largest = 0; if ( rows > cols ){ largest = rows; }else{ largest = cols; } Mat temp = Mat::zeros(largest, largest, CV_8UC3);
// Copy your original image // First define the roi in the large image --> draw this on a paper to make it clear // There are two possible cases Rect roi; if (finale.rows > finale.cols){ roi = Rect((temp.cols - finale.cols)/2, 0, finale.cols, finale.rows); } if (finale.cols > finale.rows){ roi = Rect(0, (temp.rows - finale.rows)/2, finale.cols, finale.rows); }
// Copy the original to the black large temp image finale.copyTo(temp(roi));
// Rotate the image Mat rotated = temp.clone(); rotate(temp, 90, rotated);
Mat result = rotated(Rect(roi.y, roi.x, roi.height, roi.width)).clone();
//imshow("rotated", result);
int z=0;
for(int y = 0; y <64; ++y)
{
//Option 1: get a pointer to a 3 -channel element
cv::Vec3b* pointerToRgbPixel = result.ptr<cv::Vec3b>(y);
for (int x = 0; x < 64; ++x, ++pointerToRgbPixel)
{
uint8_t blue = (*pointerToRgbPixel )[0];
uint8_t green = (*pointerToRgbPixel )[1];
uint8_t red = (*pointerToRgbPixel )[2];
//final_array[z+1]=red;
// final_array[z+1]=green;
//final_array[z+2]=blue;
z=z+3;
led_canvas_set_pixel(offscreen_canvas, x, y, red, green, blue);
}
}
offscreen_canvas = led_matrix_swap_on_vsync(matrix, offscreen_canvas);
}
led_matrix_delete(matrix);
// the camera will be deinitialized automatically in VideoCapture destructor
return 0;}
hzeller
sir, we have built an rgb panel similar to adafruit 32x32. we have used tlc5927 as driver,we have connected 1 chainlink and 2 in parallel ,i have attached the image that is displayed on screen
i have attached the open cv code i use to read images
include <opencv2/core/core.hpp>
include <opencv2/imgproc/imgproc.hpp>
include <opencv2/highgui/highgui.hpp>
using namespace cv;
int main(int argc, char *argv[]) { while(1) { Mat image; image=imread("skull.jpg"); if(image.empty()) return -1;
} }
the panel is flickering i couldnt figure it out whether it is due to refresh rate or clock speed ,can you pls help me