radical | Tools for radiometric calibration of consumer RGB cameras | Camera library

 by   taketwo C++ Version: 1.0.0 License: MIT

kandi X-RAY | radical Summary

kandi X-RAY | radical Summary

radical is a C++ library typically used in Video, Camera applications. radical has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Consumer-grade color cameras suffer from significant optical nonlinearities, often referred to as vignetting effects. For example, in Asus Xtion Pro Live cameras the pixels in the corners are two times darker than those in the center of the image. The vignetting effects in Intel RealSense cameras are less severe, but are still noticeable, as can be seen below:.
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              radical has a low active ecosystem.
              It has 38 star(s) with 11 fork(s). There are 6 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 3 open issues and 9 have been closed. On average issues are closed in 49 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of radical is 1.0.0

            kandi-Quality Quality

              radical has no bugs reported.

            kandi-Security Security

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

            kandi-License License

              radical is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              radical releases are available to install and integrate.
              Installation instructions, examples and code snippets are available.

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            radical Key Features

            No Key Features are available at this moment for radical.

            radical Examples and Code Snippets

            Library usage
            C++dot img1Lines of Code : 13dot img1License : Permissive (MIT)
            copy iconCopy
            find_package(radical CONFIG REQUIRED)
            
            target_link_libraries(your_target radical)
            
            cmake .. -Dradical_DIR=/lib/cmake/radical
            
            #include 
            #include 
            
            radical::RadiometricResponse rr("calibration-file-path.crf");
            radical::VignettingResponse vr("calibrati  

            Community Discussions

            QUESTION

            What is the Sobel operator?
            Asked 2021-Jun-15 at 18:13

            I tried 5 different implementations of the Sobel operator in Python, one of which I implemented myself, and the results are radically different.

            My questions is similar to this one, but there are still differences I don't understand with the other implementations.

            Is there any agreed on definition of the Sobel operator, and is it always synonymous to "image gradient"?

            Even the definition of the Sobel kernel is different from source to source, according to Wikipedia it is [[1, 0, -1],[2, 0, -2],[1, 0, -1]], but according to other sources it is [[-1, 0, 1],[-2, 0, 2],[-1, 0, 1]].

            Here is my code where I tried the different techniques:

            ...

            ANSWER

            Answered 2021-Jun-15 at 14:22

            according to wikipedia it's [[1, 0, -1],[2, 0, -2],[1, 0, 1]] but according to other sources it's [[-1, 0, 1],[-2, 0, 2],[-1, 0, 1]]

            Both are used for detecting vertical edges. Difference here is how these kernels mark "left" and "right" edges.

            For simplicity sake lets consider 1D example, and let array be

            [0, 0, 255, 255, 255]

            then if we calculate using padding then

            • kernel [2, 0, -2] gives [0, -510, -510, 0, 0]
            • kernel [-2, 0, 2] gives [0, 510, 510, 0, 0]

            As you can see abrupt increase in value was marked with negative values by first kernel and positive values by second. Note that is is relevant only if you need to discriminate left vs right edges, when you want just to find vertical edges, you might use any of these 2 aboves and then get absolute value.

            Source https://stackoverflow.com/questions/67987368

            QUESTION

            code for extracting numbers outside parenthesis doesn't work
            Asked 2021-Jun-14 at 20:52

            I'm trying to write a simple program that extracts the numbers and operands outside the last pair of parenthesis, i'm trying to achieve this by employing a simple recursive function, however, my code is printing nothing. What's wrong with the code?

            ...

            ANSWER

            Answered 2021-Jun-14 at 20:52

            The problem is with the wrong stopping condition which is leading to an infinite recursion in this line if(x[y] != '('){. You just need to put that condition in the end or you can ignore it all.

            Source https://stackoverflow.com/questions/67976927

            QUESTION

            plotting parameters (e.g. xlim and ylim) in R markdown document behave differently on different machines
            Asked 2021-May-26 at 14:25

            A friend and I are writing a document in R Markdown, which includes some super basic phylogenetic tree diagrams. We have run into a strange issue, where the same R markdown document produces different looking plots depending on which one of us knits the document. On my friend's machine, the plots look fine. On my machine, the borders of the plot look radically different, creating excess whitespace around the diagram.

            The code we're using is as follows:

            ...

            ANSWER

            Answered 2021-May-26 at 14:25

            That is because your friend's machine has tools to crop figures: pdfcrop and ghostscript. These tools are probably not installed on your machine. Since you didn't provide your sessionInfo(), I don't know your platform, so it's hard to provide specific instructions on installation. If your LaTeX distribution is TinyTeX, pdfcrop can be installed via tinytex::tlmgr_install('pdfcrop'). Note that if you are on Windows, you will need to install Perl for pdfcrop. If you are on macOS, ghostscript can be installed via Homebrew.

            Source https://stackoverflow.com/questions/67699982

            QUESTION

            I'm unsure how to create a stacked bar chart that in R that shows the occurrences of a variable broken up by month
            Asked 2021-May-26 at 04:47

            My dataset, sharks for example, contains a variable of the species name, classified as a factor, and a variable month, also classified as a factor. What I want to do is create a separate bar chart for each month to show the number of each species caught in that month. Alternatively, a single stacked bar chart to show all 12 months. I've started a ggplot code, however, I don't know what to use as the y variable, as that should be the count for each species.

            ...

            ANSWER

            Answered 2021-May-26 at 04:47

            You can use count to find the count of Species in each month. Try -

            Source https://stackoverflow.com/questions/67698566

            QUESTION

            How do I get div to work right in HTML and CSS?
            Asked 2021-May-20 at 17:39

            I am adding sections to our website and all but one of them are working the way I want: i.e. no margin between sections.

            I'm not able to get this one page's sections to have no margin between sections; they have extra space beneath. I have went over the code with a fine tooth comb and cannot find the error.

            I am first including the code of a sample page that works correctly:

            ...

            ANSWER

            Answered 2021-May-20 at 17:39

            What you are experiencing is called "collapsing margins". Example: If there's an h2 as the first child element inside a div, and the div has no margins, the top margin of the h2 will "go outside the div" at the top - h1, h2 etc. tags have a default margins in practically all browsers (which is a browser setting). To prevent that, you can define all margins for according elements as zero, like I did below with

            Source https://stackoverflow.com/questions/67624111

            QUESTION

            How to dynamically select the next instance of a class after a click in native JavaScript?
            Asked 2021-May-12 at 13:33

            In an effort to make my form more accessible, what I'm trying to figure out is that if the user presses enter on either the Agree or Disagree button, the tab-focus should skip to the next agree button. I've added a class to every instance of Agree buttons (next-btn), so now I just need to write a function that focuses on the next instance of next-btn.

            The HTML is as follows:

            ...

            ANSWER

            Answered 2021-May-11 at 18:03

            So I used Array#forEach to iterate through the array and get the index of the button.

            So I use the buttons array because it contains all the button.button-label elements, and the .next-btn elements have the .button-label class.

            So I slice the buttons array to return all the items in the array after the one that called the focusHere function, and found the first item or instance of the .next-btn element

            Source https://stackoverflow.com/questions/67491943

            QUESTION

            Program about radical numbers: IndexError: list index out of range [python]
            Asked 2021-May-05 at 17:44

            I am sure about that there aren't any mistakes in my class. I can't give all codes because the program is big. The program is about radical numbers. Such as converting √8 to 2√2. I am going to use this class in my main python file. Here are the codes:

            ...

            ANSWER

            Answered 2021-May-05 at 17:33
                    if (kontroldegiskeni + 1 > len(bolenler_listesi)):
                        break
            

            Source https://stackoverflow.com/questions/67405906

            QUESTION

            Is SQLite in immutable mode safe on non read-only media?
            Asked 2021-May-01 at 00:30

            In an application that ships with a read-only SQLite database, I've found that opening the database as immutable radically improves query performance. However the SQLite documentation says this (emphasis mine):

            The immutable parameter is a boolean query parameter that indicates that the database file is stored on read-only media. When immutable is set, SQLite assumes that the database file cannot be changed, even by a process with higher privilege, and so the database is opened read-only and all locking and change detection is disabled.

            This is tripping me up a bit because the media (Windows Program Files) is not read-only and it can be changed, but the expectation is that it won't change. The application itself does not alter the database. A user could alter the databases using external tools (or just open it in Notepad and corrupt it) but we would call that user error and tell them not to do that.

            My concern is that this part of the documentation might be hinting at some other process I'm not aware of (like maybe Windows periodically doing something that might result in the database file changing in some way).

            If the application itself does not alter the database, and the user doesn't either, and there isn't some other malicious or poorly-coded program on the computer that might be touching files that don't belong to it, is it reasonably safe to open a SQLite database as immutable?

            ...

            ANSWER

            Answered 2021-May-01 at 00:30

            Experimentally, the answer appears to be yes, it is safe. I made this change and have not observed any problems with it.

            Source https://stackoverflow.com/questions/66379016

            QUESTION

            After apt install the package is executable but can't remove it
            Asked 2021-Apr-10 at 07:56

            After successfully installing the dvips package, it shows up:

            ...

            ANSWER

            Answered 2021-Apr-10 at 07:56

            QUESTION

            With zero errors, why CSS styling are not reflecting on browser?
            Asked 2021-Mar-22 at 05:16

            The image of the product in the product component is not rendering the styles given to it in the Product.css file.

            Header and Home component styling are working fine but not the Product styling.

            I checked everything, seems like everything is fine but still scratching my head to find the blind spot.

            OUTPUT

            ...

            ANSWER

            Answered 2021-Mar-22 at 05:08

            The classname prop should be className (camelCase).

            From the docs,

            To specify a CSS class, use the className attribute. This applies to all regular DOM and SVG elements like

            , , and others.

            Source https://stackoverflow.com/questions/66740541

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

            Vulnerabilities

            No vulnerabilities reported

            Install radical

            Configure the project. By default, both runtime library and calibration apps will be built. If only the runtime library is needed, then configure as follows:.
            Clone this repository.
            Configure the project. By default, both runtime library and calibration apps will be built. If only the runtime library is needed, then configure as follows: cmake .. -DBUILD_APPS=OFF Note that if you want to enable support for Debevec camera response function calibration and fitting of polynomial vignetting model in the calibration app, you need to tell CMake where Ceres is installed: cmake .. -DCeres_DIR=<CERES_INSTALL_PATH>/share/Ceres
            Install the project with make install.

            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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            CLONE
          • HTTPS

            https://github.com/taketwo/radical.git

          • CLI

            gh repo clone taketwo/radical

          • sshUrl

            git@github.com:taketwo/radical.git

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