משיב מוביל
Tracking algorithm with metro

שאלה
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Hi,
well, I've developed a tracking algorithm, and I want to implement it with metro ... my question is ... how do I get a stream of images from the camera (i need the pixeldata) and show them ? I tried to search for this ... all I could find is using MFC .. which doesn't help me ...
any idea how can I get this pixel data stream from the camera do some manipulation and show it to the user ?
יום חמישי 28 יוני 2012 16:04
תשובות
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Hi BlacKICce,
You've posted a question in the Metro Style Applications Israeli forum. All questions here should be asked in Hebrew language.
For this time only, I'll pass and provide you with an answer.
First, I understand that you're familiar with C++ since you've mentioned MFC, and this is good, since for your solution, I highly recommend using C++ and not C# for Video processing.
In general, to capture Video from a video device into a file or a stream, you should use the:
Windows::Media::Capture::MediaCapture type. Specifically you should call the StartRecordToStreamAsync method.
There is a great sample in the SDK which you can download from here:
http://code.msdn.microsoft.com/windowsapps/media-capture-sample-adf87622
Hope this help.
Tomer Shamam,
Please remember to mark the replies as answers if they help and unmark them if they provide no help.
- הוצע כתשובה על-ידי תומר שמםModerator יום חמישי 28 יוני 2012 20:09
- סומן כתשובה על-ידי BlacKICcE יום שישי 29 יוני 2012 07:32
יום חמישי 28 יוני 2012 20:04מנחה דיון
כל התגובות
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Hi BlacKICce,
You've posted a question in the Metro Style Applications Israeli forum. All questions here should be asked in Hebrew language.
For this time only, I'll pass and provide you with an answer.
First, I understand that you're familiar with C++ since you've mentioned MFC, and this is good, since for your solution, I highly recommend using C++ and not C# for Video processing.
In general, to capture Video from a video device into a file or a stream, you should use the:
Windows::Media::Capture::MediaCapture type. Specifically you should call the StartRecordToStreamAsync method.
There is a great sample in the SDK which you can download from here:
http://code.msdn.microsoft.com/windowsapps/media-capture-sample-adf87622
Hope this help.
Tomer Shamam,
Please remember to mark the replies as answers if they help and unmark them if they provide no help.
- הוצע כתשובה על-ידי תומר שמםModerator יום חמישי 28 יוני 2012 20:09
- סומן כתשובה על-ידי BlacKICcE יום שישי 29 יוני 2012 07:32
יום חמישי 28 יוני 2012 20:04מנחה דיון -
Hi,
There are several ways to read Video File:
1. IRandomAccessStream fileStream = await file.OpenAsync(FileAccessMode.Read);
2. Convert stream to byte array -
using (MemoryStream zipMemoryStream = new MemoryStream(WindowsRuntimeBufferExtensions.ToArray(await FileIO.ReadBufferAsync(mainFile))))
{
}3. Data Reader
private async Task ReadVideoPath()
{
try
{
StorageFile sampleFile = await ApplicationData.Current.LocalFolder.GetFileAsync(videoDataFilename);
using (IRandomAccessStream readStream = await sampleFile.OpenAsync(FileAccessMode.Read))
{
// Read the file to an IInputStream stream, then get and load the DataReader.
using (IInputStream inputStream = (IInputStream)readStream)
{
using (DataReader dataReader = new DataReader(inputStream))
{
uint numBytesLoaded = await dataReader.LoadAsync((uint)readStream.Size);
videoFile = dataReader.ReadString(numBytesLoaded);
}
}
}
}
catch (System.IO.FileNotFoundException)
{
// photoDataFilename not found
}
}Please mark the replies as answers if they help and unmark them if they provide no help.
My blog: blogs.microsoft.co.il/blogs/shairיום שישי 29 יוני 2012 17:30 -
Thanks for your answer, but it's not relevant since the question was "how do I get a stream of images from the camera". Not from a file.
Please remember to mark the replies as answers if they help and unmark them if they provide no help.
יום שישי 29 יוני 2012 21:57מנחה דיון