SourceLab | projects created to explore , understand and assess libraries | Awesome List library

by devworker55 JavaScript Version: Current License: No License

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kandi X-RAY | SourceLab Summary

SourceLab is a JavaScript library typically used in Awesome, Awesome List applications. SourceLab has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

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SourceLab has a low active ecosystem.

It has 4 star(s) with 0 fork(s). There are no watchers for this library.

It had no major release in the last 6 months.

SourceLab has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of SourceLab is current.

Quality

SourceLab has no bugs reported.

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SourceLab has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

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SourceLab releases are not available. You will need to build from source code and install.

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SourceLab Key Features

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SourceLab Examples and Code Snippets

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Community Discussions

Trending Discussions on SourceLab

R: converting a complicated XML to dataframe

How can I read the CVPixelBuffer as 4 channel float format from a CIImage?

maven-surefire-plugin dummy:dummy.jar:1.0 missing

QUESTION

R: converting a complicated XML to dataframe

Asked 2020-Jul-30 at 07:39

I have an xml document which is a bit complicated, and I need help converting it to a dataframe. It looks like this (obviously the actual document is much larger):

...

ANSWER

Answered 2020-Jul-30 at 07:39

xmlToDataFrame in particular doesn't seem to like duplicate nodes. Your best bet seems to be the package xml2 and nested use the function purrr::map. I think for XPATH to work you also have to get rid of the namespace because no nodes are actually qualified by it:

Source https://stackoverflow.com/questions/63158001

QUESTION

How can I read the CVPixelBuffer as 4 channel float format from a CIImage?

Asked 2020-Jul-15 at 15:13

I'm currently trying to do some calculations on a CIImage construct. We are using a custom Core ML model on video frames, and in the meantime using GPU to translate these with CIFilters to required formats.

For one step, I need to do some calculations on two of the outputs generated by a model, and find the mean and standart deviations from the pixel data per channel.

For testing and tech preview, I was able to create a UIImage, read CVPixelData, convert and calculate on the CPU. But while trying to adapt it to the GPU I hit a rock.

The process is simple:

Convert CIImage BGRA to LAB format. We do not need the alpha channel, but kept as LAB-A
Do calculations on the pixel data.
Return from LAB to BGRA, and copy the alpha channel as is.

At current state, I am using a custom CIFilter + Metal kernel to convert the CIImage from RGB to LAB (and back to RGB) format. Without calculations in between, RGB > LAB > RGB conversion works as expected and returns the same image without any deformations. This tells me that the float precision is not lost.

But when I tried to read the pixel data in between, I'm not able to get the float values I was looking for. CVPixelBuffer created from the LAB formatted CIImage is giving me values that are always zero. Tried a few different OSType formats like kCVPixelFormatType_64RGBAHalf, kCVPixelFormatType_128RGBAFloat, kCVPixelFormatType_32ARGB, etc., none of them are returning the float values. But if I read data from another image I'm always getting the UInt8 values as expected...

So my question is as the title suggest "How can I read the CVPixelBuffer as a 4 channel float format from a CIImage?"

Simplified Swift and Metal code for the process is as follows.

...

ANSWER

Answered 2020-Jul-15 at 15:13

It's very strange that you get all zeros, especially when you set the format to kCVPixelFormatType_128RGBAFloat...

However, I highly recommend you check out CIImageProcessorKernel, it's made for this very use case: adding custom (potentially CPU-based) processing steps to a Core Image pipeline. In the process function you get access to the input and output buffers either as MTLTexture, CVPixelBuffer, or even direct access to the baseAddress.

Here is an example kernel I wrote for computing the mean and variance of the input image using Metal Performance Shaders and returning them in a 2x1 pixel CIImage:

Source https://stackoverflow.com/questions/62910409

QUESTION

maven-surefire-plugin dummy:dummy.jar:1.0 missing

Asked 2017-May-11 at 12:45

I can't get my build to build successfully because the org.apache.maven.surefire:surefire-junit4:jar:2.18.1 plugin is missing the dummy.jar.

My maven downloads everything fine from my custom repository. So there is no network problem. Also, this Problem appears on different versions from maven-surefire-plugin.

Hopefully, someone can help me. I just can't figure out what the problem is.

Error:

...

ANSWER

Answered 2017-May-11 at 12:45

Maven can't find org.apache.maven.surefire:surefire-junit4:jar:2.18.1 in your custom repository. However that dependency is correct and available in the maven central. Since you've configured central to your custom repository, maven will not look for this dependency in maven central repository.

This is most likely due to a configuration error in your custom repository server or that server not having a working internet connection.

You can either try to troubleshoot your custom repository server, or change central to default maven central repository in your maven settings.xml.

Source https://stackoverflow.com/questions/43914467

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install SourceLab

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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