Questions - OpenCV Q&A Forum

6

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no

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no

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2020-09-28 11:52:06 -0500 kebwi

VFR: obtain FR/duration/timestamp of a given frame?

13

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no

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no

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2020-09-28 07:23:22 -0500 sarslan

Using Gstreamer Pipeline in openCV, Why my pipeline works when I add videoconvert element before appsink ?

10

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no

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no

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2020-09-28 06:59:48 -0500 Scheolin

Camera Center from rvecs and tvecs

opencv

11

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no

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no

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2020-09-28 05:18:41 -0500 image data

I wanted to export my satellite image to a particular zoom level

Satellite

22

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1

answer

1

vote

2020-09-28 03:09:56 -0500 berak

Why is a contour from cv2.findContours() in a shape like [N,1,2]?

11

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no

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2020-09-28 01:35:24 -0500 Deebo

Visual Studio 2019 build error "link.exe" could not be run

VS2019

10

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no

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no

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2020-09-28 01:22:20 -0500 vib1035

Opencv Python - Detecting lines on a page of a book

image-processing

12

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1

answer

no

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2020-09-27 20:00:52 -0500 squenix008

Callback parameters not being updated

setMouseCallback

30

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1

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no

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2020-09-27 09:11:36 -0500 Chris

How to color the pixels in an image depending on whether they are inside/outside a zone/circle?

20

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2

answers

2

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2020-09-27 05:39:55 -0500 sturkmen

try to read different frame by videocapture but failed

videocapture

35

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1

answer

1

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2020-09-26 19:26:00 -0500 greggaz

Cannot decode server-sent uchar vector on client side: Empty Mat results.

67

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1

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2020-09-26 17:19:59 -0500 sturkmen

deletion of useless posts

forum

31

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1

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no

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2020-09-25 22:55:15 -0500 yoshihiko

How to convert stereo camera distances, pixels to mm [closed]

stereocamera

2k

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1

answer

4

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2020-09-25 19:46:18 -0500 tjwmmd2

Fastest way to convert BGR <-> RGB! Aka: Do NOT use Numpy magic "tricks".

20

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no

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2020-09-25 16:54:52 -0500 queisser

Calibration grid larger than FOV - which method?

calibration

88

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no

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2020-09-25 11:30:43 -0500 Vishwanath Garrepalli

Hi I have started working in ML and CV field recently. I want to participate in GSoC 2021. Can someone please guide and suggest me what I should do for contributing.

20

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2020-09-25 09:20:12 -0500 Leonardo_ads

imencode not working with ".jpg" extension (Access violation reading location)

imencode

29

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no

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2020-09-25 09:05:59 -0500 jast_r

Preform separation and image segmentation

17

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no

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2020-09-25 08:36:25 -0500 Pawan29

What is the length of the tape/strip from the image?

61

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1

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-1

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2020-09-25 07:49:08 -0500 Supreeth Kumar Y P

Disable file system cache during imwrite [closed]

18

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2020-09-25 07:44:35 -0500 Supreeth Kumar Y P

How to Apply warpPerspective only for part of Image?

384

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2

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no

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2020-09-25 05:36:01 -0500 Shassk

How to separate objects wich have the same color

objectdetection

10

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no

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2020-09-25 05:34:38 -0500 Supreeth Kumar Y P

How to update UMat when Mat is updated?

11

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no

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2020-09-25 05:21:10 -0500 Shassk

Determine new coordinates of pixel after calibration + remap

calibration

14

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no

answers

no

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2020-09-25 02:54:32 -0500 wil-den

peculiar docker problem

114

views

1

answer

1

vote

2020-09-24 15:46:36 -0500 archimedium

warpPerspective() to a different origin [SOLVED]

geometric-transform

53

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1

answer

no

votes

2020-09-24 14:05:44 -0500 sturkmen

Detect objects even though they touch the border of an image

opencv#python

17

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no

answers

no

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2020-09-24 13:01:09 -0500 Mark S

ArUco Thresholding Window Size

76

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no

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2020-09-24 11:27:38 -0500 Maxime

Imread with preallocated data pointer (cuda unified memory) is reallocating with the exact same size, but shouldn't [closed]

32

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1

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no

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2020-09-24 10:44:53 -0500 berak

33,193 questions

VFR: obtain FR/duration/timestamp of a given frame?

Using Gstreamer Pipeline in openCV, Why my pipeline works when I add videoconvert element before appsink ?

Camera Center from rvecs and tvecs

I wanted to export my satellite image to a particular zoom level

Why is a contour from cv2.findContours() in a shape like [N,1,2]?

Visual Studio 2019 build error "link.exe" could not be run

Opencv Python - Detecting lines on a page of a book

Callback parameters not being updated

How to color the pixels in an image depending on whether they are inside/outside a zone/circle?

try to read different frame by videocapture but failed

Cannot decode server-sent uchar vector on client side: Empty Mat results.

deletion of useless posts

How to convert stereo camera distances, pixels to mm [closed]

Fastest way to convert BGR <-> RGB! Aka: Do NOT use Numpy magic "tricks".

Calibration grid larger than FOV - which method?

Hi I have started working in ML and CV field recently. I want to participate in GSoC 2021. Can someone please guide and suggest me what I should do for contributing.

imencode not working with ".jpg" extension (Access violation reading location)

Preform separation and image segmentation

What is the length of the tape/strip from the image?

Disable file system cache during imwrite [closed]

How to Apply warpPerspective only for part of Image?

How to separate objects wich have the same color

How to update UMat when Mat is updated?

Determine new coordinates of pixel after calibration + remap

peculiar docker problem

warpPerspective() to a different origin [SOLVED]

Detect objects even though they touch the border of an image

ArUco Thresholding Window Size

Imread with preallocated data pointer (cuda unified memory) is reallocating with the exact same size, but shouldn't [closed]

how to solve (-215:Assertion failed) !empty() in function 'cv::CascadeClassifier::detectMultiScale'

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