javacv

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1–30 of 2009

Discussion group for the JavaCV project
https://github.com/bytedeco/javacv

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施振彬, Samuel Audet2

Feb 21

Low GPU Utilization When Transcoding Videos Using javacv ffmpeg

We can easily use the ffmpeg program from Java this way: https://bytedeco.org/javacpp-presets/ffmpeg/

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Low GPU Utilization When Transcoding Videos Using javacv ffmpeg

We can easily use the ffmpeg program from Java this way: https://bytedeco.org/javacpp-presets/ffmpeg/

Feb 21

Santhosh Kumar S, Samuel Audet2

10/30/23

How to video input devcie list?

It's possible using FFmpeg: https://github.com/bytedeco/javacv/issues/189#issuecomment-1526419187

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How to video input devcie list?

It's possible using FFmpeg: https://github.com/bytedeco/javacv/issues/189#issuecomment-1526419187

10/30/23

Manohar Grandhi, Samuel Audet4

10/3/23

i am using this dependency of jar in eclipse it is giving so many exceptions so i excluded even though it is giving so many

You can ignore those warning messages, they are not errors On 10/3/23 14:16, Manohar Grandhi wrote:

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i am using this dependency of jar in eclipse it is giving so many exceptions so i excluded even though it is giving so many

You can ignore those warning messages, they are not errors On 10/3/23 14:16, Manohar Grandhi wrote:

10/3/23

Jhuliano, Samuel Audet6

8/18/23

Stop recording and save video output, without stopping the application

The program does not give any error, I believe that the recording is ended, but the file is not

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Stop recording and save video output, without stopping the application

The program does not give any error, I believe that the recording is ended, but the file is not

8/18/23

shira Jacobs, Samuel Audet2

6/5/23

java.lang.NoClassDefFoundError: org/bytedeco/javacpp/Pointer

If you're looking for a working example, please use this one: https://github.com/bytedeco/gradle-

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java.lang.NoClassDefFoundError: org/bytedeco/javacpp/Pointer

If you're looking for a working example, please use this one: https://github.com/bytedeco/gradle-

6/5/23

shira Jacobs, Keith Hall5

2/18/23

Mat of Byte to Array falling

Hey @Keith Hall Thank you!! very much appreciated!! ‫בתאריך יום ד׳, 8 בפבר׳ 2023 ב-20:30 מאת ‪Keith

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Mat of Byte to Array falling

Hey @Keith Hall Thank you!! very much appreciated!! ‫בתאריך יום ד׳, 8 בפבר׳ 2023 ב-20:30 מאת ‪Keith

2/18/23

2/1/23

Is there a possibility in JavaCV to compare images that are not the same size when one is shorter and the other is narrower #1977

Hi, I'm looking for an algorithm to normalize images to be able to compare them with QualitySSIM.

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Is there a possibility in JavaCV to compare images that are not the same size when one is shorter and the other is narrower #1977

Hi, I'm looking for an algorithm to normalize images to be able to compare them with QualitySSIM.

2/1/23

1/21/23

compare imaging not in the same size JavaCv

Hey all, Im using - = QualitySSIM.compute(base, screenShot, diff); but hen I sent image that have 1

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compare imaging not in the same size JavaCv

Hey all, Im using - = QualitySSIM.compute(base, screenShot, diff); but hen I sent image that have 1

1/21/23

Menegussi, Samuel Audet5

12/8/22

Problem to build the javacv-camera-preview project

Hi! I will try it. Do you have any idea why the project runs on the emulator and not in the

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Problem to build the javacv-camera-preview project

Hi! I will try it. Do you have any idea why the project runs on the emulator and not in the

12/8/22

Aurelio Maica, Keith Hall9

11/30/22

Crossing Line Detection

please help me create an event when crossing this line friend, sorry to ask so much. Thanks Em sáb.,

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Crossing Line Detection

please help me create an event when crossing this line friend, sorry to ask so much. Thanks Em sáb.,

11/30/22

shira Jacobs, … Keith Hall12

11/24/22

color a grayScale MAT

This will hopefully give you a clue why you can't color a grayscale image A grayscale Mat 2000

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color a grayScale MAT

This will hopefully give you a clue why you can't color a grayscale image A grayscale Mat 2000

11/24/22

shira Jacobs, Samuel Audet3

11/16/22

Add column for Mat Javacv

Thanks Samuel! That works correctlly! ב-יום שלישי, 15 בנובמבר 2022 בשעה 01:38:30 UTC+2, Samuel Audet

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Add column for Mat Javacv

Thanks Samuel! That works correctlly! ב-יום שלישי, 15 בנובמבר 2022 בשעה 01:38:30 UTC+2, Samuel Audet

11/16/22

11/14/22

Detect a face when crossing 2 fixed points?

how do i detect a face when crossing 2 fixed points? Thanks in advance

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Detect a face when crossing 2 fixed points?

how do i detect a face when crossing 2 fixed points? Thanks in advance

11/14/22

Tamada, Samuel Audet2

11/9/22

Can't import some packages in JavaCV

On 11/7/22 21:17, Tamada wrote: > my top-level build.gradle: Adding dependencies there won't

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Can't import some packages in JavaCV

On 11/7/22 21:17, Tamada wrote: > my top-level build.gradle: Adding dependencies there won't

11/9/22

shira Jacobs, … Keith Hall5

11/9/22

Diff image in JavaCV

Wooow u my men that works great! ב-יום שלישי, 8 בנובמבר 2022 בשעה 17:27:12 UTC+2, the.kei...@gmail.

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Diff image in JavaCV

Wooow u my men that works great! ב-יום שלישי, 8 בנובמבר 2022 בשעה 17:27:12 UTC+2, the.kei...@gmail.

11/9/22

Samuel Audet, shira Jacobs2

11/8/22

Re: [javacv] JavaCV errorin cvHoughCircles: error:(-5:Bad argument) Unknown array type in function 'cv::cvarrToMat'

How to convert the image? ב-יום רביעי, 15 באפריל 2020 בשעה 03:52:56 UTC+3, Samuel Audet כתב/ה: That

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Re: [javacv] JavaCV errorin cvHoughCircles: error:(-5:Bad argument) Unknown array type in function 'cv::cvarrToMat'

How to convert the image? ב-יום רביעי, 15 באפריל 2020 בשעה 03:52:56 UTC+3, Samuel Audet כתב/ה: That

11/8/22

shira Jacobs, … Keith Hall8

10/31/22

Identify the difference between two images and highlight the difference

!!Thank you ב-יום ראשון, 30 באוקטובר 2022 בשעה 17:23:25 UTC+2, the.kei...@gmail.com כתב/ה: Looks like

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Identify the difference between two images and highlight the difference

!!Thank you ב-יום ראשון, 30 באוקטובר 2022 בשעה 17:23:25 UTC+2, the.kei...@gmail.com כתב/ה: Looks like

10/31/22

Aurelio Maica, Samuel Audet2

10/26/22

CanvasFrame In jpanel

Not really, but you can easily draw images in your own components. On Thu, Oct 27, 2022, 03:55

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CanvasFrame In jpanel

Not really, but you can easily draw images in your own components. On Thu, Oct 27, 2022, 03:55

10/26/22

Aurelio Maica, Keith Hall3

9/24/22

If you're using a video file rather than a camera feed then modify this : import org.bytedeco.

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If you're using a video file rather than a camera feed then modify this : import org.bytedeco.

9/24/22

崔鹏飞, Samuel Audet4

6/6/22

javacv-paltform-1.5.7 cann't recognize the "rotate" of a video-inputStream while 1.5.6 can.

Indeed, the "rotate" metadata appears in the output of ffprobe with FFmpeg 4.4.x, but not

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javacv-paltform-1.5.7 cann't recognize the "rotate" of a video-inputStream while 1.5.6 can.

Indeed, the "rotate" metadata appears in the output of ffprobe with FFmpeg 4.4.x, but not

6/6/22

Larienas, Samuel Audet3

2/27/22

Quarkus never load Tensor flow

Hi Samuel, I have set the "org.bytedeco.javacpp.logger.debug" system property to "true

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Quarkus never load Tensor flow

Hi Samuel, I have set the "org.bytedeco.javacpp.logger.debug" system property to "true

2/27/22

v.f.b...@gmail.com, … Samuel Audet36

12/29/21

problem with ffmpeg on pi arm build

Well, we also need to make sure we're trying to capture in a resolution and pixel format

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problem with ffmpeg on pi arm build

Well, we also need to make sure we're trying to capture in a resolution and pixel format

12/29/21

Aurelio Maica, … Keith Hall3

12/17/21

Anybody helpe me translate this code from python to javacv?

Here's a start. It doesn't do anything with the OCR and I haven't implemented the imutils

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Anybody helpe me translate this code from python to javacv?

Here's a start. It doesn't do anything with the OCR and I haven't implemented the imutils

12/17/21

Vid Vartak, Samuel Audet4

11/1/21

Buffer underflow warnings when generating video?

Well, for example, one could assume that the recommendations from YouTube are probably in line with

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Buffer underflow warnings when generating video?

Well, for example, one could assume that the recommendations from YouTube are probably in line with

11/1/21

Vid Vartak, Samuel Audet3

11/1/21

Gradle import empties classpath

Thanks so much Samuel, I had missed the plugins line: id 'org.bytedeco.gradle-javacpp-platform

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Gradle import empties classpath

Thanks so much Samuel, I had missed the plugins line: id 'org.bytedeco.gradle-javacpp-platform

11/1/21

3/17/21

Re: Transition between images

Kind of, with codecs like H.264 that support a variable frame rate (VBR) we can do that by calling

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Re: Transition between images

Kind of, with codecs like H.264 that support a variable frame rate (VBR) we can do that by calling

3/17/21

Larienas, Samuel Audet7

3/13/21

Hi Samuel, Playing with channels solved the issue. Thanks for your guidance. With Regards, Lariena

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Hi Samuel, Playing with channels solved the issue. Thanks for your guidance. With Regards, Lariena

3/13/21

Larienas, Samuel Audet2

3/8/21

I think you mean how to specify the same scale factor for x and y, like this as explained in the docs

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I think you mean how to specify the same scale factor for x and y, like this as explained in the docs

3/8/21

Larienas, Samuel Audet3

2/19/21

It looks like ImageMagick supports it, but not for Java yet: https://github.com/bytedeco/javacpp-

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It looks like ImageMagick supports it, but not for Java yet: https://github.com/bytedeco/javacpp-

2/19/21

Oleksandr, Samuel Audet5

2/8/21

cvMinAreaRect2 for a list of Points: (-5:Bad argument) Exception

Ok, thank you, Samuel. Samuel Audet schrieb am Montag, 8. Februar 2021 um 09:05:12 UTC+1: You can

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cvMinAreaRect2 for a list of Points: (-5:Bad argument) Exception

Ok, thank you, Samuel. Samuel Audet schrieb am Montag, 8. Februar 2021 um 09:05:12 UTC+1: You can

2/8/21

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