image-processing/examples.txt at main · boyla950/image-processing · GitHub

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############ NOTE: WHEN RUNNING IN PYTHON SHELL, CLOSE IMSHOW WINDOWS USING X IN TOP CORNER AND THEN CONTROL^C TO QUIT ###########


Problem 1 - Light Leak:

$ python3

>>>	import cv2
>>>	import filters

>>>	img = cv2.imread(‘input1.png’, cv2.IMREAD_COLOR)

>>>	filters.problem1(img, 0.6, 0.4, ‘white’)

	#### problem1(image, darkening coefficient, blending coefficient, light type)
	#### darkening coefficient: 0 - 1 (recommended 0.6)
	#### blending coefficient: 0 - 1 (recommended 0.4)
	#### light type: 'white' or 'rainbow'


Problem 1 - Rainbow Light Leak:

$ python3

>>>	import cv2
>>>	import filters

>>>	img = cv2.imread(‘input1.png’, cv2.IMREAD_COLOR)

>>>	filters.problem1(img, 0.6, 0.4, ‘rainbow’)

	#### problem1(image, darkening coefficient, blending coefficient, light type)
	#### darkening coefficient: 0 - 1 (recommended 0.6)
	#### blending coefficient: 0 - 1 (recommended 0.4)
	#### light type: 'white' or 'rainbow'


Problem 2 - Grey Pencil Sketch:

$ python3

>>>	import cv2
>>>	import filters

>>>	img = cv2.imread(‘input1.png’, cv2.IMREAD_COLOR)

>>>	filters.problem1(img, 0.5, ‘grey’)

	#### problem2(image, blending coefficient, pencil type)
	#### blending coefficient: 0 - 1 (recommended 0.5)
	#### pencil type: 'grey' or 'colour'


Problem 2 - Colour Pencil Sketch:

$python3

>>>	import cv2
>>>	import filters

>>>	img = cv2.imread(‘input1.png’, cv2.IMREAD_COLOR)

>>>	filters.problem2(img, 0.5, ‘colour’)

	#### problem2(image, blending coefficient, pencil type)
	#### blending coefficient: 0 - 1 (recommended 0.5)
	#### pencil type: 'grey' or 'colour'


Problem 3 - Beautification:

$python3

>>>	import cv2
>>>	import filters

>>>	img = cv2.imread(‘input1.png’, cv2.IMREAD_COLOR)

>>>	filters.problem3(img, 3)

	#### problem3(image, blending coefficient)
	#### blur region: any positive odd integer (recommended 3 or 5)


Problem 4 - Swirl:

$python3

>>>	import cv2
>>>	import filters

>>>	img = cv2.imread(‘input1.png’, cv2.IMREAD_COLOR)

>>>	filters.problem4(img, 0.8, 2)

	#### problem4(image, swirl radius, swirl intensity)
	#### swirl radius: 0 - 1 (recommended 0.8)
	#### swirl intensity: any number (recommend 3)