artvision_instanton::HarrisDetector Class Reference
Implements a Harris interest point detector. More...
#include <harris_ncc_tracker.h>
Inheritance diagram for artvision_instanton::HarrisDetector:
Collaboration diagram for artvision_instanton::HarrisDetector:
Public Member Functions | |
| HarrisDetector () | |
| ~HarrisDetector () | |
| virtual void | detect (const Image &image) |
| Detect features. More... | |
| void | setNumBucketsX (int n) |
| Set/Get bucket size. More... | |
| void | setNumBucketsY (int n) |
| int | numNumBucketsX () const |
| int | numNumBucketsY () const |
| void | setK (float k) |
| Set/Get Harris "k" coefficient. More... | |
| float | k () const |
| void | setChunkSize (int n) |
| Set/Get chunk size. More... | |
| int | chunkSize () const |
| Public Member Functions inherited from artvision_instanton::TrackDetectorBase | |
| TrackDetectorBase () | |
| ~TrackDetectorBase () | |
| const std::vector< Point2d< float > > & | points () const |
| Get points. More... | |
| const std::vector< float > & | scores () const |
| Get points. More... | |
| void | setMaxNumPoints (int n) |
| Set/Get maximum number of points. More... | |
| int | maxNumPoints () const |
Additional Inherited Members | |
| Protected Attributes inherited from artvision_instanton::TrackDetectorBase | |
| std::vector< Point2d< int > > | mPoints |
| std::vector< Point2d< int > > | mPrunedPoints |
| std::vector< float > | mScores |
| std::vector< Point2d< float > > | mSubpixelPoints |
| bool | mSubpixelEnabled |
| int | mMaxNumPoints |
Detailed Description
Implements a Harris interest point detector.
Constructor & Destructor Documentation
| HarrisDetector::HarrisDetector | ( | ) |
| HarrisDetector::~HarrisDetector | ( | ) |
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Member Function Documentation
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inline |
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virtual |
Detect features.
Implements artvision_instanton::TrackDetectorBase.
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Set/Get chunk size.
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inline |
Set/Get Harris "k" coefficient.
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Set/Get bucket size.
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The documentation for this class was generated from the following files:
- /bitrise/src/Source/AR6/InstantOn/include/AR6/InstantOn/cv/trackers/harris_ncc_tracker.h
- /bitrise/src/Source/AR6/InstantOn/cv/trackers/harris_ncc_tracker.cpp


{% extends "base_site.html" %} {% load static %} {% load i18n %} {% block content_title %}
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JS pointers, globals, and garbage... gotchas.
There are plenty of resources out there to learn about these things in depth. Giving you exhaustive detail on these topics isn’t the goal of this post. I want to introduce you to some concepts that many devs gloss over while learning JS. I think it’s important to clear up some misconceptions about JS and working in it. I might do more of these covering more topics in the future such as prototypes, polymorphism, closures, etc. Anyway, let’s begin.
What are Pointers?
Pointers are basically memory locations. Think of it as a mailing address. When you mail something you don’t just write a name on the front of an envelope and drop it in the mail, it has no reference to where it needs to go. Memory and variables are kind of the same way, when you create a new variable in JS you’re really communicating with a chunk of memory that is referenced by a pointer. Keep that in mind going forward.
Garbage.
JS doesn’t make you manage your own memory or pointers, it does it for you. All of the creation, passing, and cleanup happens in a blackbox, this makes it easy for the developer, but it also introduces confusion. Remember that a lot of variables in JS are passed by reference, and depending on where that reference occurs some things might stay in memory even if you can get to them from their origional scope.
Globals.
Globals are referenced from everywhere and they change. When a global thing changes all of it’s references also change. Not so much.
var one = true;
function two() { this.one = one; };
var three = new two();
one = false;
console.log(three);
> {one:true}
Okay, so we mapped a global to this object, but when we changed the global it didn’t update… that’s because JS made a copy, this wasn’t a pass by reference, so the global isn’t really all that global here, but check this out.
var one = {foo:true};
function two() { this.one = one; };
var three = new two();
one.foo = false;
console.log(three);
> {one:{foo:false}}
So this time we mapped to a global object and when it’s value changed internally, we caught it
WTF?!
When passing around objects and more complex data structures JS doesn’t copy raw values, it does a pass by reference, so what you have is basically the pointer that the global was associated with, since it’s not a hard copy but a shared piece of memory, changes inside of a global object will be reflected in your reference… kinda like how you’d expect a global to work in the first place.
but wait, there’s more!
var one = {foo:true};
function two() { this.one = one; };
var three = new two();
one.foo = false;
console.log(three.one);
> {foo:false},
one = null;
console.log(one);
> null
console.log(three.one);
> {foo:false}
Wat.
What happened here was JS in its memory management saw we had a reference to one from another closure
, rather than destroying that reference and reclaiming that memory it allowed it to persist and created a new chunk of memory, then re-mapped the global one to that memory. Since our closured
version still maps to the old memory/data, we still have complete access to it.
var one = {foo:true};
function two() { this.one = one; };
var three = new two();
var four = new two();
one.foo = false;
console.log(three.one, four.one);
> {foo:false}, {foo:false}
one = null;
console.log(one);
> null
console.log(three.one);
> {foo:false}, {foo:false}
three.one.foo = 'asdf';
console.log(three.one, four.one);
> {foo:'asdf'}, {foo:'asdf'}


Lazy-tabs do not load their content when a screen is opened, it reduces the number of components in memory. Components within a tab are loaded only when user selects the tab. Additionally, if a lazy-tab includes visual components linked to a data source, containing a JPQL query, this query will not be invoked as well. As a result, the screen opens quicker and data is loaded only when user requests it by selecting this tab.
Please note that the components located on a lazy-tab do not exist when the screen is opened. That is why they cannot
be injected into a controller and cannot be obtained by invoking getComponent()
in the controller's init()
method. The lazy
-tab components can be called only after
user opens it. This moment may be caught using TabSheet.TabChangeListener.
In this example, when you open the screen, you will see that label2
component, located inside
lazy tab2
, is null. When you select the second tab, checkComponents()
method will be called
again, and this time label2
will be available.


iZotope Neutron 3 Advanced review
Does this third-generation channel strip plugin really take us one step closer to the dream of the fully-automated mix engineer?
by Computer Music
iZotope Neutron 3 Advanced review
(Image: © Future)
Our Verdict
Sculptor, Mix Assistant and some serious optimisation make v3 another solid update to iZotope’s all-in-one channel strip
Pros
- • Mix Assistant is pretty cool Sculptor is brilliant
- • The existing modules are still excellent Stunning performance
- • Greatly improved GUI, apart from...
Cons
- • ...the unhelpful Multiband UI Visual Mixer clearly needs an update
What is it?
With both previous versions of Neutron scoring 9/10, the pressure is on for the latest iteration of iZotope’s amazing ‘smart’ channel strip plugin to meaningfully improve on its predecessor. We’ll concentrate on the new features of v3 for the purposes of this review, but first, let’s get up to speed with a general summary.
Neutron is a semi-modular channel strip boasting seven (previously six) superb processing modules – two multiband Compressors, EQ (with Dynamic mode and the excellent Masking Meter), Gate, Exciter, Transient Shaper and the new Sculptor – invoked in whatever combination and order you like (and also included as individual plugins), plus an output Limiter. What’s always set it apart from other similar offerings, however, is the Track Assistant feature, which ‘intelligently’ analyses the incoming audio and creates a tailored preset for it.
Neutron is available in three versions: Elements, Standard and Advanced – see the iZotope website for the differences. We’re looking at the flagship Advanced here.
Neutron 3 sees a radical overhaul of the GUI, with the module control panels now overlaid over the metering displays within a single pane à la Nectar (9/10, 265), enabling upscaling of the latter; much smoother spectrograms; and corner-drag resizing. For the most part, it’s positive and sexy stuff, but we do wish there was the option to switch back to the old decked display style for modules running in multiband mode, as having to select bands individually to view and edit their controls is a step backwards from having them all visible at once.
Despite being nudged sideways by Neutron 3’s headline addition, Mix Assistant – which we’ll get to shortly – Track Assistant is still very much a marquee feature. It works just as it did in previous versions, but now also deploys the new Sculptor (see The Sculptor module) in its generated presets, and offers Instrument type sub-menus for more detailed targeting.
As ever, the presets Track Assistant serves up are only intended as starting points for tweaking, rather than being in any sense ‘final’, so it’s still obviously important to approach it with that in mind.
Performance and verdict
The new Mix Assistant uses ‘intelligent’ track analysis to set up the level, pan and width controls in the Visual Mixer introduced with Neutron 2. Via the magic of Inter-Plugin Communication, this unifies the level, pan and width controls of all running instances of Neutron (or the included Relay utility plugin), the idea being to load one onto every track, set all tracks to unity gain and centred panning, then adjust their levels and stereo positioning collectively in the Visual Mixer instead of the host DAW’s mixer.
The first step in the Mix Assistant’s Balance dialogue is to select tracks for inclusion and set one or more of them to be the Focus for the algorithm to keep front and centre, as it were. With that done, simply play your song from start to finish, then marvel as the levels and pans of every plugin are automatically set up to create a mix. Immediately after analysis, you get the chance to tweak the relative levels of five arbitrary groups – Focus, Voice, Bass, Percussion and Musical – and reassign individual tracks between them if the algorithm has classified anything incorrectly. Within each group, the algorithm adjusts the gains of the component tracks to get as close to the level set by that group’s fader as possible. Hitting the Accept button commits to the group levelling and dissolves the group faders – after that, you can only change individual track volumes, pan positions and stereo width using the Visual Mixer’s control pucks.
With the right source material, the results can be very impressive. On a well-recorded pop/rock song comprising around 20 tracks with vocal Focus, the suggested levels made for a remarkably solid foundation on which to build – we were pleasantly surprised at the cohesion achieved by the mixing algorithm. However, on a vocal-free house track, featuring a heavily modulated bassline, the nonsense it made of the non-percussive signals weren’t really worth the time spent loading all those Relay plugins. This didn’t come as a huge surprise, though, electronic music being far less algorithmically quantifiable than acoustic/electric instrumentation, we assume. Another consideration is that the settings made by Mix Assistant are, of course, static, so you still have to manage any fader rides yourself.
We should also mention the great work iZotope have done on CPU/memory usage and loading times with Neutron 3, yielding a night and day improvement over v2 in both regards.
Although Mix Assistant isn’t as fundamentally useful as Track Assistant, it can certainly save some time at the start of the mixing process. It’s about time the Visual Mixer got a bit of love, however: it still doesn’t even offer mute and solo buttons, let alone the ability to colour individual track controls or customise their icons.
All that aside, the main selling point of Neutron is and always has been the outstanding quality of those signal processing modules. The Track and Mix Assistants, tasty though they may be, are really just the innovative icing on an already delicious cake.
MusicRadar verdict: Sculptor, Mix Assistant and some serious optimisation make v3 another solid update to iZotope’s all-in-one channel strip.
The web says
"Neutron 3 can pinpoint masking issues, as well as suggesting suitable processing for individual tracks and for sweetening the overall mix — but it goes further than they did, thanks to a new automatic Mix Assistant."
Sound On Sound
"The innovative AI tools can give mixed results, but this still remains an excellent toolbox of high-quality, easy to use tools."
MusicTech
Hands-on demos
Production Expert
MG The Future
Weaver Beats
Specifications
- Mixing suite with eight processors
- Dynamic EQ and built-in Limiter
- Multiband compression, Gate, Exciter and Transient Shaper
- New Sculptor module
- AI Mixing Assistant
- New Mix Balance feature
- Separate plugins for each module
- Visual Mixer, Relay and Tonal Balance Control plugins
- Upgrade options from v1 and v2 Advanced


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Bloom5.4-activities
This is in Bloom Player in order to test backward compatibility.
PLEASE TEST WITH VARIOUS PAGE SIZED INCLUDING SQUARE
This book was created with Bloom Enterprise features freely enabled in order to support projects funded by the local community.
Bloom5.4-activities
This is in Bloom Player in order to test backward compatibility.
PLEASE TEST WITH VARIOUS PAGE SIZED INCLUDING SQUARE
Choose the matching word
Choose the matching picture
cat
Check Your Understanding
আপনাদের বোধশক্তির পরীক্ষা করুন
Compruebe su comprensión
Vérifier votre compréhension
अपनी समझ की जांचें
Ka'yima tnab'il
သင်မည်မျှနားလည်ကို စစ်ဆေးရန်
خپله پوهه وګوره
درک خود را بررسی کنید
Chawila le aweta'mab'al
Проверьте ваше понимание
Angalia Uelewa Wako
检查理解
Is the Earth Flat?
No.
Yes. I did my own "research" on the internet. You should too.
Bloom5.4-activities
This book was created with Bloom Enterprise features freely enabled in order to support projects funded by the local community.


Namespace FastReport.Data
Classes
AbsRowVariable
Returns absolute number of data row. This value is never reset at the start of a new group.
BusinessObjectDataSource
Represents a datasource based on business object of IEnumerable type.
Column
This class represents a single data column in a DataSourceBase.
ColumnCollection
Represents the collection of Column objects.
ColumnComparer
Represents the comparer class that used for sorting the collection of columns.
CommandParameter
This class represents a single parameter to use in the "select" command.
CommandParameterCollection
Represents the collection of CommandParameter objects.
ConnectionCollection
Represents the collection of DataConnectionBase objects.
CopyNameMacroVariable
Returns the name of the printed copy.
This variable is actually a macro. Its value is substituted when the component is viewed in the preview window. That means you cannot use it in an expression.
CsvConnectionStringBuilder
Represents the CsvDataConnection connection string builder.
CsvDataConnection
Represents a connection to csv file-based database.
CubeSourceBase
Base class for all CubeSources such as SliceCubeSource.
CubeSourceCollection
Represents the collection of CubeSourceBase objects.
DataComponentBase
The base class for all data components such as data sources, columns.
DataConnectionBase
The base class for all data connection components such as
DataSourceBase
Base class for all datasources such as TableDataSource.
DataSourceCollection
Represents the collection of DataSourceBase objects.
DataSourceComparer
Represents the comparer class that used for sorting the collection of data sources.
DateVariable
Returns date and time of the report's start.
Dictionary
This class stores all report data items such as datasources, connections, relations, parameters, system variables.
Dictionary.RegDataItem
Represents the item registered in a dictionary.
HierarchyLevelVariable
Returns a level of hierarchy in the hierarchical report.
HierarchyRowNoVariable
Returns the row number like "1.2.1" in the hierarchical report.
LoadBusinessObjectEventArgs
Provides data for LoadBusinessObjectEventHandler event.
PageMacroVariable
Returns current page number.
This variable is actually a macro. Its value is substituted when the component is viewed in the preview window. That means you cannot use it in an expression.
PageNofMVariable
Returns a string containing the current page number and total pages in a form "Page N of M". To use this variable, you need to enable the report's double pass.
PageNVariable
Returns a string containing the current page number in a form "Page N".
PageVariable
Returns current page number.
Parameter
Represents a report parameter that is used to pass user data to a report.
ParameterCollection
Represents the collection of Parameter objects.
Relation
Represents a master-detail relation between two data sources.
RelationCollection
Represents the collection of Relation objects.
RowVariable
Returns data row number inside the group. This value is reset at the start of a new group.
SliceCubeSource
Represents a datasource based on DataView class.
SystemVariable
Represents the base class for system variables.
SystemVariables
Represents the collection of system variables.
TableCollection
Represents the collection of TableDataSource objects.
TableDataSource
Represents a datasource based on DataTable class.
Total
Represents a total that is used to calculate aggregates such as Sum, Min, Max, Avg, Count.
TotalCollection
Represents the collection of Total objects.
TotalPagesMacroVariable
Returns the number of total pages in the report.
This variable is actually a macro. Its value is substituted when the component is viewed in the preview window. That means you cannot use it in an expression.
TotalPagesVariable
Returns total number of pages in the report. To use this variable, you need to enable the report's double pass.
ViewDataSource
Represents a datasource based on DataView class.
XmlConnectionStringBuilder
Represents the XmlDataConnection connection string builder.
XmlDataConnection
Represents a connection to xml file-based database.
Enums
BOConverterFlags
Obsolete. Specifies a set of flags used to convert business objects into datasources.
ColumnBindableControl
Specifies the type of an object that will be created when you drop the data column on a report page.
ColumnFormat
Specifies the format for the column value.
FilterOperation
Determines how to filter the data value.
PropertyKind
Specifies a kind of property.
TotalType
Specifies the total type.
Delegates
LoadBusinessObjectEventHandler
Represents the method that will handle the LoadBusinessObject event.


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