masterenol's profile - activity

MSI Workstation Laptop or MSI Gaming Laptop for best color tracking and Unreal Engine performance? I intend to use the

MSI Workstation Laptop or MSI Gaming Laptop for best color tracking and Unreal Engine performance? I intend to use the

MSI Workstation Laptop or MSI Gaming Laptop for best color tracking and Unreal Engine performance? I intend to use the

How to process OpenCV C++ data on a cloud? I have OpenCV code in C++ with a list of contours that I want to have process

@Eduardo Thank you for this info, but I'm still very confused. What advantage does storing X and Y coordinates in this P

What is Point2f and Point3f? I'm seeing these 'Point2f' and 'Point3f' keywords in the OpenCV C++ docs, but my C++ books

Thanks for your response berak. My Visual Studio did not recognize the keyword 'set', but I did get the webcam to show b

Thanks for your response berak. My Visual Studio did not recognize the keyword 'set', but I did get the webcam to show b

My Python code shows webcam, buy my C++ does not. Here is my Python 3 code that properly displays my webcam: import num

What's the best way to record audio on a live webcam feed? Running Python 3 and OpenCV on Windows 10. I have a Python

@berak. If my understanding is correct, the numeric value of the frames per second of a webcam (30 for example) is equal

@berak. If my understanding is correct, the numeric value the frames per second of a webcam (30 for example) is equal to

@LBerger, thanks!

This is an interesting response berak, thank you.

This is an interesting response, thank you.

Is OpenCV for Python or C++ a good library to use for detecting the blinking rate/frequency of an LED diode lights? In

Hello sjhalayka. So I'm thinking I can do something like: absdiff(initialFrame, currentFrame) . Is this correct?

Detect Slow Gradual Change in Background with Live Video and Python 3? Hello everyone. How can I go about detecting slow

Not quite. I needed the code to work while using live video capture. I made progress by adding 'drawing = False' followe

How to read a mouse left click event in python? For example, I would like to make a code like this: while True: [...]

How to read a mouse left click event in python? For example, I would like to make a code like this: while True: [...]

How to read a mouse left click event in python? For example, I would like to make a code like this: while True: [...]

berak, I did read the tutorial. I'm modifying the code in the tutorial to make it work according to my needs. This code

berak, I did read the tutorial. I'm modifying the code in the tutorial to make it work according to my needs. This code

berak, I did read the tutorial. I'm modifying the code in the tutorial to make it work according to my needs. This code

berak, I did read the tutorial. I'm modifying the code in the tutorial to make it work according to my needs. This code

How to read a mouse left click event in python? For example, I would like to make a code like this: while True: [...]

How to read a mouse left click event in python? For example, I would like to make a code like this: while True: [...]

Create a new frame that contains common images from two other frames? For example, I have two frames for a calendar im

For example, I would like to finish this code:

import cv2
import numpy as np

cap = cv2.VideoCapture(0)

while True:
    ret, frame = cap.read()

    if # frame is empty or all zeros #:
        print("Empty Frame")
    else:
        cv2.imshow('frame',frame)

    if cv2.waitKey(33) & 0xFF == ord('q'):
            break

cv2.destroyAllWindows()

The line, 'if # frame is empty or all zeros #:', is there an operator I can use to determine if a frame is empty?

In Python, is there a method or operator to determin is a frame is empty or an all zero-matrix? For example, I would lik

In Python, is there a method or operator to determin is a frame is empty or an all zero-matrix? For example, I would lik

Is there a limit to frames per second for a composite usb video capture device? I ran a code which seems to have increas

The color wheel shown has a Hue Range of 0 to 179 I believe. I wish to black out the colors with hue range of -30 to 30 as shown in the right color wheel. Unfortunately, I tried the following number sets for 'lower_hsv' and 'upper_hsv', but they do not work:

20,-20: "error: list index out of range"

-20,20: only blacks out range 0 to 20.

20,160: blacks out everything except what I wanted blacked out.

160,20: "error: list index out of range"

Can someone please tell me how I can get the image to display as shown on the right color wheel? I will need to black out several different colors on a different image.

import cv2
import numpy as np


image = cv2.imread("hsvColorCircle.png")
imageHSV = cv2.cvtColor(image, cv2.COLOR_BGR2HSV)
image_lower_hsv = np.array([0, 200, 220])
image_upper_hsv = np.array([20, 255, 255])
imageMask = cv2.inRange(imageHSV, image_lower_hsv, image_upper_hsv)
_2, imageMaskContours, imageMaskHierarchy = cv2.findContours(imageMask, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
imageCNT = imageMaskContours[0]
imageIndex = -1
imageThickness = 4
imageColor = (0, 0, 0)
cv2.drawContours(image,imageMaskContours,imageIndex,imageColor,-1)
imageResize = cv2.resize(image,(640,480))
cv2.imshow('image', imageResize)

cv2.waitKey(0)
cv2.destroyAllWindows

C:\fakepath\hsvColorCircle.png

Cool, thanks!

Select HSV Hue from -30 to 30 in Python? The color wheel shown has a Hue Range of 0 to 179 I believe. I wish to black o

Select HSV Hue from -30 to 30 in Python? The color wheel shown has a Hue Range of 0 to 179 I believe. I wish to black o

Select HSV Hue from -30 to 30 in Python? The color wheel shown has a Hue Range of 0 to 179 I believe. I wish to black o