GMU:Tutorials/Performance Platform/Capture with Processing - Revision history

Kanfeng: /* Algorithm of calculation */

2016-07-31T16:50:37Z

Algorithm of calculation

← Older revision		Revision as of 16:50, 31 July 2016
Line 16:		Line 16:

	'''And here is the github link for my full code:''' <https://github.com/ConnorFk/DBL_VisitorsCount>		'''And here is the github link for my full code:''' <https://github.com/ConnorFk/DBL_VisitorsCount>


	<source lang="Java" line start= "17">		<source lang="Java" line start= "17">

Kanfeng: /* Algorithm of calculation */

2016-07-31T16:50:11Z

Algorithm of calculation

← Older revision		Revision as of 16:50, 31 July 2016
Line 28:		Line 28:

	[[File:codeProcessing1.jpg]]		[[File:codeProcessing1.jpg]]


	<source lang="Java" line start= "32">		<source lang="Java" line start= "32">
Line 36:		Line 37:
	void captureEvent(Capture cam)		void captureEvent(Capture cam)
	{		{
	cam.read();		cam.read(); // to start the webcam
	newFrame = true;		newFrame = true; // keep grabbing the new frames
	}		}

Line 52:		Line 53:
	drawBlobsAndEdges(true,true);		drawBlobsAndEdges(true,true);
	}		}
	count = theBlobDetection.getBlobNb();		count = theBlobDetection.getBlobNb(); // get the numbers of blobs captured
	println(count);		println(count); // print out the numbers in Processing console
	}		}
	</source>		</source>

Kanfeng: /* Algorithm of calculation */

2016-07-31T16:48:39Z

Algorithm of calculation

← Older revision		Revision as of 16:48, 31 July 2016
Line 28:		Line 28:

	[[File:codeProcessing1.jpg]]		[[File:codeProcessing1.jpg]]

			<source lang="Java" line start= "32">

			// ==================================================
			// captureEvent()
			// ==================================================
			void captureEvent(Capture cam)
			{
			cam.read();
			newFrame = true;
			}

			void draw()
			{
			if (newFrame)
			{
			newFrame=false;
			image(cam,0,0,width,height);
			img.copy(cam, 0, 0, cam.width, cam.height,
			0, 0, img.width, img.height);
			fastblur(img, 2);
			theBlobDetection.computeBlobs(img.pixels);
			drawBlobsAndEdges(true,true);
			}
			count = theBlobDetection.getBlobNb();
			println(count);
			}
			</source>

	[[File:codeProcessing2.jpg]]		[[File:codeProcessing2.jpg]]

Kanfeng: /* Algorithm of calculation */

2016-07-31T16:47:39Z

Algorithm of calculation

← Older revision		Revision as of 16:47, 31 July 2016
Line 19:		Line 19:
	<source lang="Java" line start= "17">		<source lang="Java" line start= "17">

	printArray(Capture.list());		printArray(Capture.list());//to get the webcam source list
	//cam = new Capture(this, 640, 480);		//cam = new Capture(this, 640, 480); //default webcam in your laptop
	cam = new Capture(this, 640, 480, Capture.list()[2]);//Logitech C270 Webcam		cam = new Capture(this, 640, 480, Capture.list()[2]);//Logitech C270 Webcam

Kanfeng: /* Algorithm of calculation */

2016-07-31T16:46:34Z

Algorithm of calculation

← Older revision		Revision as of 16:46, 31 July 2016
Line 16:		Line 16:

	'''And here is the github link for my full code:''' <https://github.com/ConnorFk/DBL_VisitorsCount>		'''And here is the github link for my full code:''' <https://github.com/ConnorFk/DBL_VisitorsCount>

			<source lang="Java" line start= "17">

			printArray(Capture.list());
			//cam = new Capture(this, 640, 480);
			cam = new Capture(this, 640, 480, Capture.list()[2]);//Logitech C270 Webcam

			// Comment the following line if you use Processing 1.5
			cam.start();
			</source>

	[[File:codeProcessing1.jpg]]		[[File:codeProcessing1.jpg]]

Kanfeng: /* Algorithm of calculation */

2016-07-30T19:45:19Z

Algorithm of calculation

← Older revision		Revision as of 19:45, 30 July 2016
Line 18:		Line 18:

	[[File:codeProcessing1.jpg]]		[[File:codeProcessing1.jpg]]

			[[File:codeProcessing2.jpg]]

	==Webcam Setup of the DBL==		==Webcam Setup of the DBL==

Kanfeng: /* Algorithm of calculation */

2016-07-30T19:41:35Z

Algorithm of calculation

← Older revision		Revision as of 19:41, 30 July 2016
Line 15:		Line 15:
	I am using Blobdetection library written by Mario Klingemann <http://incubator.quasimondo.com> in Processing Opencv to help me with the code part. So that I can get the data of blobs, and therefore to count the amounts of blobs to get the amounts of visitors in the platform.		I am using Blobdetection library written by Mario Klingemann <http://incubator.quasimondo.com> in Processing Opencv to help me with the code part. So that I can get the data of blobs, and therefore to count the amounts of blobs to get the amounts of visitors in the platform.

	And here is the github link for my full code: <https://github.com/ConnorFk/DBL_VisitorsCount>		'''And here is the github link for my full code:''' <https://github.com/ConnorFk/DBL_VisitorsCount>

	[[File:codeProcessing1.jpg]]		[[File:codeProcessing1.jpg]]

Kanfeng: /* Algorithm of calculation */

2016-07-30T19:41:06Z

Algorithm of calculation

← Older revision		Revision as of 19:41, 30 July 2016
Line 13:		Line 13:
	'''Code in Processing'''		'''Code in Processing'''

	I am using Blobdetection library written by Mario Klingemann <http://incubator.quasimondo.com> in Processing Opencv to help me with the code part. So that I can get the data of blobs, and therefore to count the amounts of blobs to get the amounts of visitors in the platform.		I am using Blobdetection library written by Mario Klingemann <http://incubator.quasimondo.com> in Processing Opencv to help me with the code part. So that I can get the data of blobs, and therefore to count the amounts of blobs to get the amounts of visitors in the platform.

			And here is the github link for my full code: <https://github.com/ConnorFk/DBL_VisitorsCount>

	[[File:codeProcessing1.jpg]]		[[File:codeProcessing1.jpg]]

Kanfeng: /* Algorithm of calculation */

2016-07-30T19:35:46Z

Algorithm of calculation

← Older revision		Revision as of 19:35, 30 July 2016
Line 12:		Line 12:

	'''Code in Processing'''		'''Code in Processing'''

			I am using Blobdetection library written by Mario Klingemann <http://incubator.quasimondo.com> in Processing Opencv to help me with the code part. So that I can get the data of blobs, and therefore to count the amounts of blobs to get the amounts of visitors in the platform.

	[[File:codeProcessing1.jpg]]		[[File:codeProcessing1.jpg]]

Kanfeng: /* Limitation */

2016-07-30T19:33:21Z

Limitation

← Older revision		Revision as of 19:33, 30 July 2016
Line 52:		Line 52:
	You can change the webcam settings to better serve for your blob detection according to the light environment, hence, you will have more accurate result about the amount of visitors in the capture area.		You can change the webcam settings to better serve for your blob detection according to the light environment, hence, you will have more accurate result about the amount of visitors in the capture area.

	==Limitation==		==Limitation / Attention==

	Blob detection is still not the most accurate one to calculate the amount of visitors, but it works somehow in this case, you need to adjust the webcam settings and the light environment in the platform. For the light environment, more bright the background is, there will have stronger pixel difference to be better for the blob detection. And please pay attention to the shadows caused by light, the shadows will also be captured by the webcam, if the shadows are not well controlled, they will interfere the accuracy to calculate.		Blob detection is still not the most accurate one to calculate the amount of visitors, but it works somehow in this case, you need to adjust the webcam settings and the light environment in the platform. For the light environment, more bright the background is, there will have stronger pixel difference to be better for the blob detection. And please pay attention to the shadows caused by light, the shadows will also be captured by the webcam, if the shadows are not well controlled, they will interfere the accuracy to calculate.