Questions - OpenCV Q&A Forum

3

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no

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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

3

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no

answers

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

5

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no

answers

1

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2020-09-28 00:13:53 -0500 Eric Song

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

9

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1

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no

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

Callback parameters not being updated

setMouseCallback

27

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1

answer

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?

17

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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

34

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1

answer

1

vote

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

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

62

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no

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1

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

deletion of useless posts

forum

30

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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

views

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".

19

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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

74

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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.

19

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

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

imencode

28

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no

answers

no

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

Preform separation and image segmentation

16

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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]

16

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

How to Apply warpPerspective only for part of Image?

383

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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

8

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no

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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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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

111

views

1

answer

1

vote

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

warpPerspective() to a different origin [SOLVED]

geometric-transform

47

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1

answer

no

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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

74

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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]

27

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1

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no

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

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

26

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2020-09-24 10:30:56 -0500 kilwa

how can i draw a contours in specific region

11

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no

answers

no

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2020-09-24 07:37:13 -0500 Maxime

Why imread is reallocating data buffer

11

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no

answers

no

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2020-09-24 05:42:44 -0500 Den

Opencv.js - findPerspective returns wrong corners coordinates

30

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1

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no

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2020-09-24 05:12:14 -0500 mvuori

33,260 questions

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

Opencv Python - Detecting lines on a page of a book

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

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'

how can i draw a contours in specific region

Why imread is reallocating data buffer

Opencv.js - findPerspective returns wrong corners coordinates

cv:imwrite Python error with Windows: can't open file for writing: permission denied

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