camera Module¶

class eyetracker.camera.camera.Camera(camera, dic=None)[source]¶

Bases: object

Communicate with the camera.

Class governing the communication with the camera.

Parameters:	camera : int the index of the camera, best taken from func lookForCameras, from eyetracker.camera.capture dic : dic{propID value} to check corresponding propIDs check opencv documentation under the term VideoCapture. They will be set in the moment of object creation.

close()[source]¶

Closes cap, you can reopen it with self.reOpen.

frame()[source]¶

Read frame from camera.

Returns:	frame : np.array frame from camera

reOpen(cameraIndex)[source]¶

Reopens cap.

set(**kwargs)[source]¶

Set camera parameters.

Parameters:	kwargs : {propID

eyetracker.camera.camera.lookForCameras()[source]¶

Function looks for cameras available cameras.

Returns:	dic : {Camera_i , index} where i is the 1,2,3 etc. and index is an int corresponding to the camera that should be passed on to cv2.VideoCapture or to class Camera from eyetracker.camera.camera.

display Module¶

eyetracker.camera.display.displayImage(image, where='new')[source]¶

Display image in new or existing window.

Function displays the image in a new window or in the pointed window. Returns the displayed image as a numpy array.

Parameters:	image : np.array numpy array being an image to be displayed where : string name of the window as string in which the image is to be displayed, not providing the name will create a new one
Returns:	key: int : number representation of the key that was pressed during the image display

eyetracker.camera.display.drawGlint(image, where_pupil, numberOfGlints, glints_stack)[source]¶

Find and draw glint on image.

Function takes an image, converts it to grayscale if it is not, detects glint and draws it on a new image.

Parameters:	image : np.array image where the glint is to be detected where_pupil : np.array coordinates of pupil on a given image numberOfGlints : int number of points to find on an image
Returns:	color image : np.array returns a numpy array in a bgr scale with the glint marked in blue

eyetracker.camera.display.drawPupil(image, thres, pupils_stack, numberOfPupils)[source]¶

Find and draw pupil on image.

Function takes an image, applies ‘trunc’ threshold(cv2.THRESH_TRUNC), detects pupil and draws it on a new image.

Parameters:	image : np.array image where the pupil is to be detected thres : int value of the threshold
Returns:	cimage : np.array returns a numpy array in a bgr scale with the pupil marked in red