pyrobot.camera.v4l.V4LCamera

Package pyrobot :: Package camera :: Package v4l :: Class V4LCamera

Class V4LCamera

      Device --+    
               |    
PyrobotImage --+    
               |    
          Camera --+
                   |
                  V4LCamera

A Wrapper class for the C fuctions that capture data from the Camera.
It uses the Video4linux API, and the image is kept in memory through
an mmap.

Method Summary
	`__init__(self, width, height, depth, device, channel, title, visionSystem, visible)` Device should be the name of the capture device in the /dev directory.
	`update(self)` Since data is mmaped to the capture card, all we have to do is call refresh.
Inherited from Camera
	`addFilter(self, func, *args)` Add a filter to the filter list.
	`apply(self, command, *args)`
	`clearCallbackList(self)`
	`clearFilters(self)`
	`delFilter(self, pos)`
	`getCanvasHeight(self)`
	`getCanvasWidth(self)`
	`getData(self)`
	`getDeviceData(self)` Returns the device data, whatever it might be.
	`getDeviceState(self)` Returns the .state.
	`getFilterList(self)`
	`getImage(self)`
	`hideWindow(self)`
	`listCallbackList(self)`
	`loadFilters(self)`
	`makeFilterMenu(self, data)`
	`makeMenu(self, bar, name, commands)` Assumes self.menuButtons exists...
	`makeWindow(self)` Method to make and show the device window.
	`pauseButton(self)`
	`playButton(self)`
	`popCallbackList(self)`
	`popFilterList(self)`
	`printit(self, event)`
	`processAll(self)`
	`processLeftClickDown(self, event)`
	`processLeftClickUp(self, event)`
	`processMiddleClick(self, event)`
	`processRightClick(self, event)`
	`saveAsTGA(self, path)` Save a copy of the image to disk, in TGA format (Gimp and display can read it).
	`saveFilters(self)`
	`saveImage(self)`
	`setFilterList(self, filterList)` Filters take the form: ("name", (args))...
	`setTitle(self, title)` Sets the title of the device.
	`setUpdateInterval(self, val)`
	`startDevice(self)` Starts the device (sets the .state).
	`stopDevice(self)` Stops the device (sets the .state).
	`toggleFilterMode(self)`
	`togglePlay(self, event)`
	`updateButton(self)`
	`updateDevice(self)` Method called to update the device properties.
	`updateOnce(self)`
	`updateWindow(self)` Method to update the device window.
Inherited from PyrobotImage
	`convolve(self, convmask, bit, threshold)`
	`cropPixels(self, l, t, r, b)` cropPixels() ------------ crops pixels in the amount specified from left, top, right, and bottom if unspecified, right is assumed to be the same as left and bottom the same as top.
	`display(self)` Display PyrobotImage in ASCII Art.
	`get(self, x, y, offset)` Get a pixel value.
	`getBitmap(self, cutoff, cutoff2, mode)` getBitmap()...
	`getCol(self, x)` Get the entire col, in tuples...
	`getColorFilter(self, r, g, b)` returns a filtered image r,g,b values indicate percentage of each color to keep eg.
	`getDim(self)`
	`getGrayScale(self)` Method to convert depth 3 color into depth 1 grayscale...
	`getPlane(self, colorPlane)`
	`getRow(self, y)` Get the entire row, in tuples...
	`getScaledImage(self, xscale, yscale, mode)` return a scaled version of the current image...
	`getVal(self, x, y)` Get the entire color value of the pixel in quetion, returned as a tuple.
	`histogram(self, cols, rows, initvals)` Creates a histogram.
	`incr(self, x, y, offset)` Method to increment a pixel value.
	`loadFromFile(self, filename)` Method to load image from file.
	`reset(self, vector)` Reset an image to a vector.
	`resetToColor(self, r, g, b)` reset the image to a specified color...
	`saveToFile(self, filename)` Method to save image to a file.
	`setVal(self, x, y, val)` Method to set the entire RGB value of a pixel.
	`swapPlanes(self, plane1, plane2)`
Inherited from Device
	`__getitem__(self, item)` Get a SensorValue, a range, or a set.
	`__iter__(self)` Used to iterate through SensorValues of device.
	`addWidgets(self, window)` Method to addWidgets to the device window.
	`angle(self, args, *kwargs)` Device-level method to get all of the angles.
	`destroy(self)` Hides the window.
	`distance(self, args, *kwargs)` Device-level method to get all of the distances.
	`getActive(self)` Returns the value of .active.
	`getGroupNames(self, pos)` Return all of the groups a pos is in.
	`getMaxvalue(self)` Get the maxvalue of the sensor.
	`getSensorValue(self, pos)` Returns a specific SensorValue from the range device.
	`getVisible(self)` Returns the .visible of the sensor.
	`rawToUnits(self, raw, noise, units)` Convert the sensor units into default units.
	`setActive(self, value)` Sets the .active property.
	`setMaxvalue(self, value)` Set the maxvalue of the sensor.
	`setup(self)` Use this to put setup code in (instead of in __init__).
	`setVisible(self, value)` Sets the .visible attribute, and hides/shows window.

Property Summary
Inherited from Device
	`geometry`
	`noise`
	`pos`
	`rawValue`
	`value`

Method Details

init(self, width, height, depth=3, device='/dev/video0', channel=1, title=None, visionSystem=None, visible=1)
(Constructor)

Device should be the name of the capture device in the /dev directory.
This is highly machine- and configuration-dependent, so make sure you
know what works on your system
Channel -  0: television; 1: composite; 2: S-Video

Overrides:: pyrobot.camera.Camera.__init__

update(self)

Since data is mmaped to the capture card, all we have to do is call
refresh.

Overrides:: pyrobot.camera.Camera.update

Generated by Epydoc 2.1 on Mon Jul 25 01:39:28 2005

http://epydoc.sf.net

Class V4LCamera

__init__(self, width, height, depth=3, device='/dev/video0', channel=1, title=None, visionSystem=None, visible=1) (Constructor)

update(self)

init(self, width, height, depth=3, device='/dev/video0', channel=1, title=None, visionSystem=None, visible=1)
(Constructor)