long-exposure | : movie_camera : Creates a long exposure effect | Computer Vision library

 by   kelvins Python Version: Current License: No License

kandi X-RAY | long-exposure Summary

kandi X-RAY | long-exposure Summary

long-exposure is a Python library typically used in Artificial Intelligence, Computer Vision, OpenCV, Numpy applications. long-exposure has no bugs, it has no vulnerabilities and it has low support. However long-exposure build file is not available. You can download it from GitHub.

This project creates long exposure-like images from an input video using Python and OpenCV. It computationally simulates the long exposure photography effect. Long-exposure, time-exposure, or slow-shutter photography involves using a long-duration shutter speed to sharply capture the stationary elements of images while blurring, smearing, or obscuring the moving elements. Long-exposure photography captures one element that conventional photography does not: an extended period of time. The paths of bright moving objects become clearly visible. Clouds form broad bands, head and tail lights of cars draw bright streaks, stars leave trails in the sky, and water waves appear smoothened. Only bright objects will leave visible trails, whereas dark objects usually disappear. Boats in long exposures will disappear during daytime, but will draw bright trails from their lights at night.
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            kandi-support Support

              long-exposure has a low active ecosystem.
              It has 20 star(s) with 8 fork(s). There are 2 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 1 open issues and 3 have been closed. On average issues are closed in 12 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of long-exposure is current.

            kandi-Quality Quality

              long-exposure has 0 bugs and 0 code smells.

            kandi-Security Security

              long-exposure has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              long-exposure code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              long-exposure does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              OutlinedDot
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              long-exposure releases are not available. You will need to build from source code and install.
              long-exposure has no build file. You will be need to create the build yourself to build the component from source.
              Installation instructions are not available. Examples and code snippets are available.
              long-exposure saves you 27 person hours of effort in developing the same functionality from scratch.
              It has 74 lines of code, 8 functions and 4 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed long-exposure and discovered the below as its top functions. This is intended to give you an instant insight into long-exposure implemented functionality, and help decide if they suit your requirements.
            • Process the video .
            • A function that calculates the average of the values .
            • Local Exposure .
            • Initialize the model .
            • Play video .
            • Command line interface .
            Get all kandi verified functions for this library.

            long-exposure Key Features

            No Key Features are available at this moment for long-exposure.

            long-exposure Examples and Code Snippets

            No Code Snippets are available at this moment for long-exposure.

            Community Discussions

            QUESTION

            Save CIFilter as RAW image
            Asked 2019-Nov-25 at 20:22

            So CIFilter takes in a RAW DNG image. Is there a way I can output the image back as a RAW?

            I'm trying to blend RAW images loaded in as CIFilter's and then output them as a RAW back. It's a simple interpolation of the buffer's RAW values. Yes I understand that RAW photos don't have pixels. I'm just trying to work with the underlying BAYER filter representation here. Is there any way to do this using CIFilter. How about using a third party library?

            EDIT: What I'm Trying to Do:

            So I'm trying to blend (something like exposure stacking) multiple images taken using a Bracketed Photo Capture. So I have multiple RAW photos' pixel buffer and I'm trying to average them out their pixel values.

            Before doing that, I'm trying to confirm that my pixel values are correct. So I take a photo of a red green or blue sheet of paper so that it is all one solid color(ish), and I try to see if the pixel buffer values are what I would expect. iPhones have RGGB bayer layout so I'd expect a very solid red picture to have the following layout:

            ...

            ANSWER

            Answered 2019-Nov-25 at 08:16

            There is no way to do what you want with Core Image. You can "only" develop and process RAW input on a pixel basis with CIFilters.

            However, you can access the data of the CVPixelBuffers directly with CVPixelBufferGetBaseAddress() (and some proper locking). So you could do your blending on the CPU and maybe use vDSP to improve the performance.

            Source https://stackoverflow.com/questions/59025046

            QUESTION

            How do I get an image from a remote source (url) and show it in ImageView?
            Asked 2019-Apr-14 at 11:08

            I am building an Android Things "kiosk" style application and I want an image to show in the background like a wallpaper. I'm using Unsplash Source to get a random image but the source URL (https://source.unsplash.com/1080x1920/?long-exposure) always redirects to an image URL, so I can't use this:

            ...

            ANSWER

            Answered 2019-Apr-08 at 23:54

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

            Vulnerabilities

            No vulnerabilities reported

            Install long-exposure

            You can download it from GitHub.
            You can use long-exposure like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.

            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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            https://github.com/kelvins/long-exposure.git

          • CLI

            gh repo clone kelvins/long-exposure

          • sshUrl

            git@github.com:kelvins/long-exposure.git

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