"""Read image and videos """
import cv2 as cv
from rescale import rescaleFrame
capture = cv.VideoCapture('videos/dog.mp4') # VideoCapture(0) means web cams
while True:
isTure, frame = capture.read() #capture returns by frame
frame_resize = rescaleFrame(frame)
cv.imshow('video', frame)
cv.imshow('video_resized', frame_resize)
if cv.waitKey(20) & 0xFF == ord('d'): # if press 'd' key stop play videos
break
def changeRes(width, height):
'''Live videos'''
capture.set(3, width)
capture.set(4, height)
capture.release()
cv.destroyAllWindows()
# 비디오 윈도우에서 일정 시간이 지마녀 -215: Assertion failed,
# error가 발생한다 -> opencv가 지정한 위치에 미디어 파일을 찾지 못할때 발생
# Video run out of frame -> resize video frame
# 위의 에러를 해결하기위해 opencv02 에서 만든 rescaleFrame 함수 사용
import cv2 as cv # reads in BGR format
import numpy as np
from rescale import rescaleFrame
# Original BGR Image
original_img = cv.imread('Photos/cert.png')
img = rescaleFrame(original_img, 0.4)
# cv.imshow('Original_Image', img)
blank = np.zeros(img.shape[:2], dtype='uint8')
b, g, r = cv.split(img)
blue = cv.merge([b, blank, blank])
green = cv.merge([blank, g, blank])
red = cv.merge([blank, blank, r])
cv.imshow('Blue', blue)
cv.imshow('Green', green)
cv.imshow('Red', red)
print(img.shape)
print(b.shape)
print(g.shape)
print(r.shape)
merged = cv.merge([b, g, r])
cv.imshow('Merged', merged)
cv.waitKey(0)
import cv2 as cv
import rescale as rs
# Read video
capture = cv.VideoCapture('../Videos/dog.mp4') # use integer to capture from webcam/camera, pass file path if reading from video
while True:
#return boolean if the frame is successfully read | read video frame by frame
isTrue, frame = capture.read()
frame_resized = rs.rescaleFrame(frame, 0.5)
# display individual frame
# cv.imshow('Video', frame)
cv.imshow('Video Resized', frame_resized)
# stopping frame
if cv.waitKey(20) & 0xFF==ord('d'):
break
# release capture pointer from VideoCapture
# destroy all opened windows
cv.destroyAllWindows()