You can use the image function in MATLAB to display the video frames and then use insertShape to plot the eye position on top of the frame. To reverse the y-axis, you can set the YDir property of the axes object to 'reverse'. Here's some sample code to get you started:
% Load the video file
v = VideoReader('my_video.mp4');
% Create a figure and axes to display the frames
fig = figure;
ax = axes('Parent', fig);
% Set the y-axis direction to 'reverse'
set(ax, 'YDir', 'reverse');
% Loop through the frames and display them
while hasFrame(v)
frame = readFrame(v);
image(ax, frame);
% Get the eye position for the current frame
eye_pos = [x, y, width, height]; % Replace with your own code
% Plot the eye position on top of the frame
insertShape(ax, 'Rectangle', eye_pos, 'Color', 'red');
% Update the figure
drawnow;
end
In this code, x, y, width, and height are the coordinates of the eye position in a normal y-axis coordinate system. You may need to adjust these values to match the dimensions of your video frames. The insertShape function plots a red rectangle at the specified eye position, and the drawnow function updates the figure to display the current frame with the eye position.
