I have USB ELP camera. I'm using the v4l2 driver to capture images from that USB camera. I've found that we can change v4l2 default parameters like brightness, contrast, gamma, exposure, resolution. Can we able to increase the speed of camera access time so that it can captures images at less time by changing these parameters to optimum values?
Does changing v4l2 default settings improves usb camera performance?
452 views Asked by Chakri At
1
There are 1 answers
Related Questions in C
- dojo: using registry.byID returns "undefined"
- Custom declarative table in dojo
- How to refresh modal checkbox withing xpages column
- dojo: Cannot read property 'appendChild' of null
- How to call custom js function on scroll in Dojo OnDemandGrid?
- dgrid 'Object doesn't support this action; when attempting to render columns
- add unit to numberspinner in dojo
- dojo 1.10 How to read text file a user has picked with a file picker
- How can I use lodash in dojo?
- Dojo fallbacks for IE9
Related Questions in LINUX
- dojo: using registry.byID returns "undefined"
- Custom declarative table in dojo
- How to refresh modal checkbox withing xpages column
- dojo: Cannot read property 'appendChild' of null
- How to call custom js function on scroll in Dojo OnDemandGrid?
- dgrid 'Object doesn't support this action; when attempting to render columns
- add unit to numberspinner in dojo
- dojo 1.10 How to read text file a user has picked with a file picker
- How can I use lodash in dojo?
- Dojo fallbacks for IE9
Related Questions in CAMERA
- dojo: using registry.byID returns "undefined"
- Custom declarative table in dojo
- How to refresh modal checkbox withing xpages column
- dojo: Cannot read property 'appendChild' of null
- How to call custom js function on scroll in Dojo OnDemandGrid?
- dgrid 'Object doesn't support this action; when attempting to render columns
- add unit to numberspinner in dojo
- dojo 1.10 How to read text file a user has picked with a file picker
- How can I use lodash in dojo?
- Dojo fallbacks for IE9
Related Questions in V4L2
- dojo: using registry.byID returns "undefined"
- Custom declarative table in dojo
- How to refresh modal checkbox withing xpages column
- dojo: Cannot read property 'appendChild' of null
- How to call custom js function on scroll in Dojo OnDemandGrid?
- dgrid 'Object doesn't support this action; when attempting to render columns
- add unit to numberspinner in dojo
- dojo 1.10 How to read text file a user has picked with a file picker
- How can I use lodash in dojo?
- Dojo fallbacks for IE9
Related Questions in WEBCAM-CAPTURE
- dojo: using registry.byID returns "undefined"
- Custom declarative table in dojo
- How to refresh modal checkbox withing xpages column
- dojo: Cannot read property 'appendChild' of null
- How to call custom js function on scroll in Dojo OnDemandGrid?
- dgrid 'Object doesn't support this action; when attempting to render columns
- add unit to numberspinner in dojo
- dojo 1.10 How to read text file a user has picked with a file picker
- How can I use lodash in dojo?
- Dojo fallbacks for IE9
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
Popular Tags
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Camera access time = exposure time + readout time
Changing the resolution to lower value is the best way to decrease the camera access time.
Simple example:
mono sensor with resolution 1000 x 1000
Pixclk is 50Mhz
Readout Time = (1000 x 1000) / 50Mhz = 20ms
Mono sensor with resolution 800 x 800
Pixclk is 50Mhz
Readout time = (800 x 800) / 50Mhz = 12.8 ms
Changing the exposure time to lower values will darken your image. You can avoid it by increasing the gain value, but in that case your image will be more noisely.