JeVoisBase
1.22
JeVois Smart Embedded Machine Vision Toolkit Base Modules
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Simple demo of ARM Neon (SIMD) extensions, comparing a box filter (blur) between CPU and Neon. More...
Public Member Functions | |
virtual | ~DemoNeon () |
Virtual destructor for safe inheritance. | |
virtual void | process (jevois::InputFrame &&inframe, jevois::OutputFrame &&outframe) override |
Processing function. | |
Public Member Functions inherited from jevois::Module | |
Module (std::string const &instance) | |
virtual | ~Module () |
virtual void | process (InputFrame &&inframe) |
virtual void | process (InputFrame &&inframe, GUIhelper &helper) |
virtual void | sendSerial (std::string const &str) |
virtual void | parseSerial (std::string const &str, std::shared_ptr< UserInterface > s) |
virtual void | supportedCommands (std::ostream &os) |
Public Member Functions inherited from jevois::Component | |
Component (std::string const &instance) | |
virtual | ~Component () |
std::shared_ptr< Comp > | addSubComponent (std::string const &instance, Args &&...args) |
void | removeSubComponent (std::shared_ptr< Comp > &component) |
void | removeSubComponent (std::string const &instance, bool warnIfNotFound=true) |
std::shared_ptr< Comp > | getSubComponent (std::string const &instance) const |
bool | isTopLevel () const |
bool | initialized () const |
std::string const & | className () const |
std::string const & | instanceName () const |
std::vector< std::string > | setParamVal (std::string const ¶mdescriptor, T const &val) |
void | setParamValUnique (std::string const ¶mdescriptor, T const &val) |
std::vector< std::pair< std::string, T > > | getParamVal (std::string const ¶mdescriptor) const |
T | getParamValUnique (std::string const ¶mdescriptor) const |
std::vector< std::string > | setParamString (std::string const ¶mdescriptor, std::string const &val) |
void | setParamStringUnique (std::string const ¶mdescriptor, std::string const &val) |
std::vector< std::pair< std::string, std::string > > | getParamString (std::string const ¶mdescriptor) const |
std::string | getParamStringUnique (std::string const ¶mdescriptor) const |
void | freezeParam (std::string const ¶mdescriptor, bool doit) |
void | freezeAllParams (bool doit) |
std::string | descriptor () const |
void | setParamsFromFile (std::string const &filename) |
std::istream & | setParamsFromStream (std::istream &is, std::string const &absfile) |
virtual void | paramInfo (std::shared_ptr< UserInterface > s, std::map< std::string, std::string > &categs, bool skipFrozen, std::string const &cname="", std::string const &pfx="") |
void | foreachParam (std::function< void(std::string const &compname, ParameterBase *p)> func, std::string const &cname="") |
std::shared_ptr< DynamicParameter< T > > | addDynamicParameter (std::string const &name, std::string const &description, T const &defaultValue, ParameterCategory const &category) |
std::shared_ptr< DynamicParameter< T > > | addDynamicParameter (std::string const &name, std::string const &description, T const &defaultValue, ValidValuesSpec< T > const &validValuesSpec, ParameterCategory const &category) |
void | setDynamicParameterCallback (std::string const &name, std::function< void(T const &)> cb, bool callnow=true) |
void | removeDynamicParameter (std::string const &name, bool throw_if_not_found=true) |
void | setPath (std::string const &path) |
std::filesystem::path | absolutePath (std::filesystem::path const &path="") |
std::shared_ptr< Comp > | addSubComponent (std::string const &instance, Args &&...args) |
void | removeSubComponent (std::shared_ptr< Comp > &component) |
void | removeSubComponent (std::string const &instance, bool warnIfNotFound=true) |
std::shared_ptr< Comp > | getSubComponent (std::string const &instance) const |
bool | isTopLevel () const |
bool | initialized () const |
std::string const & | className () const |
std::string const & | instanceName () const |
std::vector< std::string > | setParamVal (std::string const ¶mdescriptor, T const &val) |
void | setParamValUnique (std::string const ¶mdescriptor, T const &val) |
std::vector< std::pair< std::string, T > > | getParamVal (std::string const ¶mdescriptor) const |
T | getParamValUnique (std::string const ¶mdescriptor) const |
std::vector< std::string > | setParamString (std::string const ¶mdescriptor, std::string const &val) |
void | setParamStringUnique (std::string const ¶mdescriptor, std::string const &val) |
std::vector< std::pair< std::string, std::string > > | getParamString (std::string const ¶mdescriptor) const |
std::string | getParamStringUnique (std::string const ¶mdescriptor) const |
void | freezeParam (std::string const ¶mdescriptor, bool doit) |
void | freezeAllParams (bool doit) |
std::string | descriptor () const |
void | setParamsFromFile (std::string const &filename) |
std::istream & | setParamsFromStream (std::istream &is, std::string const &absfile) |
virtual void | paramInfo (std::shared_ptr< UserInterface > s, std::map< std::string, std::string > &categs, bool skipFrozen, std::string const &cname="", std::string const &pfx="") |
void | foreachParam (std::function< void(std::string const &compname, ParameterBase *p)> func, std::string const &cname="") |
std::shared_ptr< DynamicParameter< T > > | addDynamicParameter (std::string const &name, std::string const &description, T const &defaultValue, ParameterCategory const &category) |
std::shared_ptr< DynamicParameter< T > > | addDynamicParameter (std::string const &name, std::string const &description, T const &defaultValue, ValidValuesSpec< T > const &validValuesSpec, ParameterCategory const &category) |
void | setDynamicParameterCallback (std::string const &name, std::function< void(T const &)> cb, bool callnow=true) |
void | removeDynamicParameter (std::string const &name, bool throw_if_not_found=true) |
void | setPath (std::string const &path) |
std::filesystem::path | absolutePath (std::filesystem::path const &path="") |
Public Member Functions inherited from jevois::ParameterRegistry | |
virtual | ~ParameterRegistry () |
Related Symbols | |
(Note that these are not member symbols.) | |
JEVOIS_DECLARE_PARAMETER (kernelw, unsigned int, "Kernel width (pixels)", 5, ParamCateg) | |
Parameter. | |
JEVOIS_DECLARE_PARAMETER (kernelh, unsigned int, "Kernel height (pixels)", 5, ParamCateg) | |
Parameter. | |
Additional Inherited Members | |
Protected Member Functions inherited from jevois::Component | |
virtual void | preInit () |
virtual void | postInit () |
virtual void | preUninit () |
virtual void | postUninit () |
virtual void | preInit () |
virtual void | postInit () |
virtual void | preUninit () |
virtual void | postUninit () |
Protected Member Functions inherited from jevois::ParameterRegistry | |
void | addParameter (ParameterBase *const param) |
void | removeParameter (ParameterBase *const param) |
void | callbackInitCall () |
Simple demo of ARM Neon (SIMD) extensions, comparing a box filter (blur) between CPU and Neon.
NEON are specialized ARM processor instructions that can handle several operations at once, for example, 8 additions of 8 bytes with 8 other bytes. NEON is the counterpart for ARM architectures of SSE for Intel architectures.
They are very useful for image processing. NEON instructions are supported both by the JeVois hardware platform and by the JeVois programming framework.
In fact, one can directly call NEON instructions using C-like function calls and specialized C data types to represent small vectors of numbers (like 8 bytes).
This demo uses a blur filter from the open-source NE10 library. It compares processing time to apply the same filter to the input video stream, either using conventional C code, or using NEON-accelerated code. The NEON-accelerated code is about 6x faster.
For more examples of use of NEON on JeVois, see modules DarknetSingle, DarknetYOLO, and DarknetSaliency which use NEON to accelerate the deep neural networks implemented in these modules.
Definition at line 135 of file DemoNeon.C.
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inlinevirtual |
Virtual destructor for safe inheritance.
Definition at line 143 of file DemoNeon.C.
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inlineoverridevirtual |
Processing function.
Reimplemented from jevois::Module.
Definition at line 146 of file DemoNeon.C.
References jevois::async(), jevois::rawimage::convertToCvRGBA(), jevois::RawImage::fmt, h, jevois::RawImage::height, jevois::rawimage::paste(), jevois::RawImage::pixelsw(), jevois::RawImage::require(), jevois::Timer::start(), jevois::Timer::stop(), jevois::yuyv::White, jevois::RawImage::width, and jevois::rawimage::writeText().
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Parameter.
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related |
Parameter.