RawVisualCortex Class Reference

The Visual Cortex Class. More...

#include <Channels/RawVisualCortex.H>

Inheritance diagram for RawVisualCortex:

[legend]

Collaboration diagram for RawVisualCortex:

[legend]

List of all members.

Public Member Functions
virtual void	saveResults (const nub::ref< FrameOstream > &ofs)
	Save our results.
const Image< float >	getVCOutput (const Image< PixRGB< byte > > &rgbin)
	Get the output of the vc map from a given image.
Constructors/Destructor

	RawVisualCortex (OptionManager &mgr, const std::string &descrName="Raw Visual Cortex", const std::string &tagName="RawVisualCortex")
	Construct with no channel; channels must then be added with addSubChan().
virtual	~RawVisualCortex ()
	Virtual destructor for safe inheritance.
Protected Member Functions
virtual void	doInput (const InputFrame &inframe)
	Implementation of ChannelBase input() functions.
virtual Image< float >	combineOutputs ()
	Combine the outputs of our subchannels.
virtual Image< float >	getChannelOutputMap (const uint idx) const
	get weighted (but not resized) channel output map
virtual Image< float >	postProcessOutputMap (const Image< float > &outmap)
	post-process raw weighted sum of channel output maps
virtual void	paramChanged (ModelParamBase const param, const bool valueChanged, ParamClient::ChangeStatus status)
	Called whenever a ModelParamBase has its value changed.
virtual void	start1 ()
	start
virtual void	stop2 ()
	stop
Protected Attributes
OModelParam< std::string >	itsType
OModelParam< MaxNormType >	itsNormType
	maxNormalization to use
OModelParam< bool >	itsUseRandom
	add random noise to output
OModelParam< float >	itsOutputFactor
	output range factor
OModelParam< float >	itsNoise
	output noise range
OModelParam< bool >	itsUseOlderVersion
	use old version? see Visualcortex.H
OModelParam< LevelSpec >	itsLevelSpec
	LevelSpec used by our channels, used to compute output dims.
OModelParam< std::string >	itsSaveOutTo
	save our outputs to MGZ file?
OModelParam< std::string >	itsLoadOutFrom
	load outputs from MGZ file?
OModelParam< bool >	itsSaveOutput
	save our output?
OModelParam< bool >	itsUseMax
	use max across features instead of sum?
OModelParam< float >	itsWeightThresh
	threshold on channel total weights for last round of maxnorm

Detailed Description

The Visual Cortex Class.

In brief, RawVisualCortex holds a collection of ChannelBase objects, and most of RawVisualCortex's operations are achieved by some kind of iteration over that collection. That is, RawVisualCortex now does little work by itself, but delegates its operations to the channels, accumulating their results if necessary. NOTE: RawVisualCortex has a virtual ModelComponent base which is shared among its inheritance from ModelComponent via the ComplexChannel inheritance path, and its inheritance from ModelComponent via its SimModule inheritance path. Just beware!

Definition at line 69 of file RawVisualCortex.H.

Constructor & Destructor Documentation

RawVisualCortex::RawVisualCortex	(	OptionManager &	mgr,
		const std::string &	descrName = `"Raw Visual Cortex"`,
		const std::string &	tagName = `"RawVisualCortex"`
	)

Construct with no channel; channels must then be added with addSubChan().

Parameters:

	mgr	our ModelManager (see ModelManager.H)
	descrName	descriptive name for human usage
	tagName	name for ParamMap usage

Definition at line 103 of file RawVisualCortex.C.

RawVisualCortex::~RawVisualCortex ( ) [virtual]

Virtual destructor for safe inheritance.

Definition at line 127 of file RawVisualCortex.C.

Member Function Documentation

Image< float > RawVisualCortex::combineOutputs ( ) [protected, virtual]

Combine the outputs of our subchannels.

We do this in a slightly different way than the ComplexChannel base version.

Reimplemented from ComplexChannel.

Definition at line 548 of file RawVisualCortex.C.

References downSizeClean(), FLOAT_NORM_PRESERVE, getChannelOutputMap(), Image< T >::getDims(), ChannelBase::getInputDims(), getMinMax(), OModelParam< T >::getVal(), Dims::h(), Image< T >::initialized(), inplaceAddBGnoise(), itsLevelSpec, itsLoadOutFrom, itsNoise, itsOutputFactor, itsSaveOutTo, itsUseMax, itsUseRandom, LevelSpec::mapLevel(), MYLOGVERB, ComplexChannel::numChans(), postProcessOutputMap(), ComplexChannel::subChan(), takeMax(), Dims::w(), and ZEROS.

void RawVisualCortex::doInput ( const InputFrame & inframe ) [protected, virtual]

Implementation of ChannelBase input() functions.

Implements ChannelBase.

Definition at line 500 of file RawVisualCortex.C.

References buildPyrGaussian(), buildRadialPyrGaussian(), featureHierarchyLevel(), featureHierarchyName(), rutz::shared_ptr< T >::get(), OModelParam< T >::getVal(), NModelParam< T >::getVal(), itsLevelSpec, itsLoadOutFrom, ComplexChannel::itsUseSpaceVariantBoundary, LevelSpec::maxDepth(), ComplexChannel::numChans(), and ComplexChannel::subChan().

Image< float > RawVisualCortex::getChannelOutputMap ( const uint idx ) const [protected, virtual]

get weighted (but not resized) channel output map

Definition at line 419 of file RawVisualCortex.C.

References getMinMax(), ComplexChannel::getSubchanTotalWeight(), OModelParam< T >::getVal(), itsUseOlderVersion, MYLOGVERB, and ComplexChannel::subChan().

Referenced by combineOutputs().

const Image< float > RawVisualCortex::getVCOutput ( const Image< PixRGB< byte > > & rgbin )

Get the output of the vc map from a given image.

Definition at line 404 of file RawVisualCortex.C.

References InputFrame::fromRgb(), ComplexChannel::getOutput(), ChannelBase::input(), SimTime::MSECS(), and SimTime::ZERO().

void RawVisualCortex::paramChanged	(	ModelParamBase *const	param,
		const bool	valueChanged,
		ParamClient::ChangeStatus *	status
	)			`[protected, virtual]`

Called whenever a ModelParamBase has its value changed.

Subclasses of ModelComponent should override this function if they need to do any internal reconfiguration when their parameters change value (whether due to a command-line option, or a setModelParamString(), or a readParamsFrom()). See OrientationChannel::paramChanged() in Channels/OrientationChannel.C for an example; also see SaccadeControllerConfigurator::paramChanged() in Neuro/SaccadeControllers.C for for how to use this to select subcomponents at runtime.

Parameters:

	param	the address of the ModelParamBase that changed; subclasses can compare this with the addresses of their model param members to figure out which is the relevant param
	valueChanged	true if the value actually changed, false if the value was "set" but the new value is the same as the old value; some clients may want to avoid re-doing expensive operations if the value did not actually change
	status	the subclass that implements paramChanged() should set status to CHANGE_REJECTED if it wishes to reject a particular parameter change; the caller of paramChanged() is expected to set status to CHANGE_ACCEPTED prior to calling paramChanged(), so the implentation of paramChanged() does not need to set *status CHANGE_ACCEPTED if it wishes to allow the change since that will already be the default status

HISTORICAL NOTE: In the past, subclasses would override setModelParamString() for this same purpose, but in the new setup, setModelParamString() is NOT virtual and hence should not be (cannot be) overridden by subclasses. This setup is cleaner (and potentially more efficient) because subclasses don't have to compare string names to figure out which param changed; instead they are passed the address of the param itself. Furthermore, the new setup is more robust, since we can handle param value changes that come from any source (e.g., setModelParamVal(), or ModelParamBase::setValString(), or OModelParam::setVal()), and not just those that come through setModelParamString().

Reimplemented from ModelComponent.

Reimplemented in VisualCortexSurprise.

Definition at line 205 of file RawVisualCortex.C.

References ComplexChannel::addSubChan(), ASSERT, ModelComponent::getManager(), OModelParam< T >::getVal(), ComplexChannel::hasSubChan(), makeContourChannel(), makeSharedComp(), MC_RECURSE, ComplexChannel::numChans(), ComplexChannel::removeAllSubChans(), and ComplexChannel::subChan().

Image< float > RawVisualCortex::postProcessOutputMap ( const Image< float > & outmap ) [protected, virtual]

post-process raw weighted sum of channel output maps

Derived classes may overload this to provide custom post-processing. For example, VisualCortexSurprise may pass the output through a sigmoidal nonlinearity or spatial competition. Default implementation is to treat the special case of VCXNORM_LANDMARK.

Reimplemented in VisualCortexSurprise.

Definition at line 465 of file RawVisualCortex.C.

References OModelParam< T >::getVal(), itsNormType, itsWeightThresh, maxNormalize(), maxNormTypeName(), VCXNORM_LANDMARK, VCXNORM_NONE, and VCXNORM_SURPRISE.

Referenced by combineOutputs().

void RawVisualCortex::saveResults ( const nub::ref< FrameOstream > & ofs ) [virtual]