Module movemeter.cc_backends.opencv

Cross-correlation backend using OpenCV, a computer vision programming library.

Functions

def find_location(orig_im, ROI, orig_im_ref, max_movement=None, upscale=1)

Returns the location of orig_im, cropped with crop (x,y,w,h), in the location of orig_im_ref coordinates.

orig_im Image ROI Crop of the orig_im orig_im_ref Reference image

def find_rotation(orig_im, ROI, orig_im_ref, upscale=1, max_movement=None, max_rotation=None, round1_steps=36, extra_rounds=5, extra_round_steps=6)

Rotates template along its center and checks the best rotation.

The ROI is internally change to the largest square ROI that fits withing the given (rectangular) ROI.

Arguments

max_rotation : float or int

In degrees, how many degrees is the total range of rotation to be checked. Between 0 and 360 degrees.

round1_steps : int

How many steps to take on the round 1.

extra_rounds : int

How many extra rounds to take in the vicinity of the first round result.

extra_round_steps : int

How many rotations to test on the extra rounds.

def resize(image, factor)

def rotate(image, degrees)

Rotates an image along its center.

Returned image has the same shape as the original,