Image Moment - Optimizing Code for Speed

Hello
I'm want to find the moment of inertia of an 2d-array. The array is converted from an image using "IMAQ ImageToArray".
The algorithm I'm using is discribed here:
Wikipedia - Image Moments
I need to calculate this formula with different values for i and j:
i.j = 0.0 - 0.1 - 1.0 - 1.1 - 0.2 - 2.0
I programmed the code shown above/attached VI, but I need the optimize it for speed.
The 2d array can be any size with a maximum of 2048 x 2048 with values varying between 0 and 4095.
My question:
How can I make this code faster?
Thank you and kudos will be given!
The Enrichment Center is required to remind you that you will be baked, and then there will be cake.
Solved!
Go to Solution.
Attachments:
Image Moment.vi ‏19 KB

Hello falkpl,
" If you are looking at moments, the IMAQ particle analysis will do moments on particles all in imaq to avoide the slower image to array.
As for optomizing your code a few observations
1. why are you using doubles- your image is 12 (actually 16bit in imaq)
2. do nor calculate intedex on each itteration pre calculate these and cache.
3. when possible do calculation on arrays at a time, ie multiple 2 arrays instead of doing it in a loop. "
Thank you for your reply, sir. As stated before, the "IMAQ Particle Analysis" only calculates moments on non-weighted (e.g. binary) particles.
The formula above includes the weight of each pixel.
1. The doubles are because the image is first filtered. This filter needs to convert the image to the DBL Type.
2. Could you please elaborate this, sir? I do not understand what you mean.
3. Effectively done in the solution. Thank you.
The Enrichment Center is required to remind you that you will be baked, and then there will be cake.

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Hi,
Looking for help to fix code for a Flash carousal.
I lost all my original files in a major hard drive crash. (no
backup, I learned). I’m now trying to redo the carousel.
My original site contained a tooltip and a icon.xml that
direct the icon click to a web page.
I have enclosed the Flash code the new carousel I created,
along with the icon.xml file. I have one web page that works using
the same XML file
http://www.susystastebuds.com/CakeZone.html
At this time I’m unable to get new carousel to work on
any other page. I guess the Flash code has changed since the
original one I did. I hope someone is able to provide help as to
why the new one won’t work.
When I click on the icon now, it will close all the other
icons and move up to the left and just stop. Not providing any link
to another web page.
If anbody has the same code in action script in script 3 that
includes the Tooltip and goto url, that would be great.
The Flash action script is:
import mx.utils.Delegate;
import mx.transitions.Tween;
import mx.transitions.easing.*;
var folder:String = "thumbnails/"; // a folder for thumbnail
files + an XML file
var numOfItems:Number;
var radiusX:Number = 300;
var radiusY:Number = 40;
var centerX:Number = Stage.width / 2;
var centerY:Number = Stage.height / 2;
var speed:Number = 0.02;
var perspective:Number = 3;
var home:MovieClip = this;
theText._alpha = 0;
var tooltip:MovieClip =
this.attachMovie("tooltip","tooltip",10000);
tooltip._alpha = 0;
var xml:XML = new XML();
xml.ignoreWhite = true;
xml.onLoad = function()
var nodes = this.firstChild.childNodes;
numOfItems = nodes.length;
for(var i=0;i<numOfItems;i++)
var t = home.attachMovie("item","item"+i,i+1);
t.angle = i * ((Math.PI*2)/numOfItems);
t.onEnterFrame = mover;
t.toolText = nodes.attributes.tooltip;
t.content = nodes.attributes.content;
t.icon.inner.loadMovie(nodes.attributes.image);
t.r.inner.loadMovie(nodes.attributes.image);
t.icon.onRollOver = over;
t.icon.onRollOut = out;
t.icon.onRelease = released;
function over()
//BONUS Section
var sou:Sound = new Sound();
sou.attachSound("sound2");
sou.start();
home.tooltip.tipText.text = this._parent.toolText;
home.tooltip._x = this._parent._x;
home.tooltip._y = this._parent._y - this._parent._height/2;
home.tooltip.onEnterFrame = Delegate.create(this,moveTip);
home.tooltip._alpha = 100;
function out()
delete home.tooltip.onEnterFrame;
home.tooltip._alpha = 0;
function released()
//BONUS Section
var sou:Sound = new Sound();
sou.attachSound("sound3");
sou.start();
home.tooltip._alpha = 0;
for(var i=0;i<numOfItems;i++)
var t:MovieClip = home["item"+i];
t.xPos = t._x;
t.yPos = t._y;
t.theScale = t._xscale;
delete t.icon.onRollOver;
delete t.icon.onRollOut;
delete t.icon.onRelease;
delete t.onEnterFrame;
if(t != this._parent)
var tw:Tween = new
Tween(t,"_xscale",Strong.easeOut,t._xscale,0,1,true);
var tw2:Tween = new
Tween(t,"_yscale",Strong.easeOut,t._yscale,0,1,true);
var tw3:Tween = new
Tween(t,"_alpha",Strong.easeOut,100,0,1,true);
else
var tw:Tween = new
Tween(t,"_xscale",Strong.easeOut,t._xscale,100,1,true);
var tw2:Tween = new
Tween(t,"_yscale",Strong.easeOut,t._yscale,100,1,true);
var tw3:Tween = new
Tween(t,"_x",Strong.easeOut,t._x,200,1,true);
var tw4:Tween = new
Tween(t,"_y",Strong.easeOut,t._y,320,1,true);
var tw5:Tween = new
Tween(theText,"_alpha",Strong.easeOut,0,100,1,true);
theText.text = t.content;
var s:Object = this;
tw.onMotionStopped = function()
s.onRelease = unReleased;
function unReleased()
//BONUS Section
var sou:Sound = new Sound();
sou.attachSound("sdown");
sou.start();
delete this.onRelease;
var tw:Tween = new
Tween(theText,"_alpha",Strong.easeOut,100,0,0.5,true);
for(var i=0;i<numOfItems;i++)
var t:MovieClip = home["item"+i];
if(t != this._parent)
var tw:Tween = new
Tween(t,"_xscale",Strong.easeOut,0,t.theScale,1,true);
var tw2:Tween = new
Tween(t,"_yscale",Strong.easeOut,0,t.theScale,1,true);
var tw3:Tween = new
Tween(t,"_alpha",Strong.easeOut,0,100,1,true);
else
var tw:Tween = new
Tween(t,"_xscale",Strong.easeOut,100,t.theScale,1,true);
var tw2:Tween = new
Tween(t,"_yscale",Strong.easeOut,100,t.theScale,1,true);
var tw3:Tween = new
Tween(t,"_x",Strong.easeOut,t._x,t.xPos,1,true);
var tw4:Tween = new
Tween(t,"_y",Strong.easeOut,t._y,t.yPos,1,true);
tw.onMotionStopped = function()
for(var i=0;i<numOfItems;i++)
var t:MovieClip = home["item"+i];
t.icon.onRollOver = Delegate.create(t.icon,over);
t.icon.onRollOut = Delegate.create(t.icon,out);
t.icon.onRelease = Delegate.create(t.icon,released);
t.onEnterFrame = mover;
function moveTip()
home.tooltip._x = this._parent._x;
home.tooltip._y = this._parent._y - this._parent._height/2;
xml.load("icons.xml");
function mover()
this._x = Math.cos(this.angle) * radiusX + centerX;
this._y = Math.sin(this.angle) * radiusY + centerY;
var s = (this._y - perspective)
/(centerY+radiusY-perspective);
this._xscale = this._yscale = s*100;
this.angle += this._parent.speed;
this.swapDepths(Math.round(this._xscale) + 100);
this.onMouseMove = function()
speed = (this._xmouse-centerX)/10000;
The XML file is:
<icons>
<icon image="icon4.png" tooltip="Baby1" url="
http://www.susystastebuds.com/BirthdaycakeZone.html"
/>
<icon image="icon5.png" tooltip="Wedding Anniversary Zone"
url="
http://www.susystastebuds.com/AnniversaryCakeZone.html"
/>
<icon image="icon6.png" tooltip="The Other Zone" url="
http://www.susystastebuds.com/OtherCakeZone.html"
/>
<icon image="icon7.png" tooltip="Specialty Zone" url="
http://www.susystastebuds.com/Specialitys_Zone.html"
/>
<icon image="icon8.png" tooltip="The Cupcake Zone" url="
http://www.susystastebuds.com/CupCakeZone.html"
/>
<icon image="icon9.png" tooltip="Home Page" url="
http://www.susystastebuds.com/home"
/>
<icon image="icon2.png" tooltip="Birthday Zone" url="
http://www.susystastebuds.com/BirthdaycakeZone.html"
/>
<icon image="icon3.png" tooltip="Wedding Zone" url="
http://www.susystastebuds.com/Weddingcakezone.html"
/>
<icon image="icon1.png" tooltip="Cakes Of The Week" url="
http://www.susystastebuds.com/CakeZone.html"
/>
<icon image="icon10.png" tooltip="Contact Us" url="
http://www.susystastebuds.com/CakeZone.html"
/>
</icons>

I need the code for a simple PopUp (Frame) with a gif
as background... Should be called from an applet...
The following code das some errors !!
Thanks Felix
public class SHHcycle extends Frame
getImage(getDocumentBase(),"Image/SHHlinear.jpg");
public void paint(Graphics screen);
{Hi,
you are using applet methods in a frame. You should either make it an applet or find alternatives.
http://galileo.spaceports.com/~ibidris/

Fixing code for a Flash carousal.

Hi,
Looking for help to fix code for a Flash carousal.
I started my web site 3 years ago with a free version of
Flash. I have since purchased Web Premium CS3.
I lost all my original files in a major hard drive crash. (no
backup, I learned). I’m now trying to redo the carousel.
My original site contained a tooltip and a icon.xml that
direct the icon click to a web page.
I have enclosed the Flash code the new carousel I created,
along with the icon.xml file. I have one web page that works using
the same XML file
http://www.susystastebuds.com/CakeZone.html
At this time I’m unable to get new carousel to work on
any other page. I guess the Flash code has changed since the
original one I did. I hope someone is able to provide help as to
why the new one won’t work.
When I click on the icon now, it will close all the other
icons and move up to the left and just stop. Not providing any link
to another web page.
If anbody has the same code in action script in script 3 that
includes the Tooltip and goto url, that would be great.
The Flash action script is:
import mx.utils.Delegate;
import mx.transitions.Tween;
import mx.transitions.easing.*;
var folder:String = "thumbnails/"; // a folder for thumbnail
files + an XML file
var numOfItems:Number;
var radiusX:Number = 300;
var radiusY:Number = 40;
var centerX:Number = Stage.width / 2;
var centerY:Number = Stage.height / 2;
var speed:Number = 0.02;
var perspective:Number = 3;
var home:MovieClip = this;
theText._alpha = 0;
var tooltip:MovieClip =
this.attachMovie("tooltip","tooltip",10000);
tooltip._alpha = 0;
var xml:XML = new XML();
xml.ignoreWhite = true;
xml.onLoad = function()
var nodes = this.firstChild.childNodes;
numOfItems = nodes.length;
for(var i=0;i<numOfItems;i++)
var t = home.attachMovie("item","item"+i,i+1);
t.angle = i * ((Math.PI*2)/numOfItems);
t.onEnterFrame = mover;
t.toolText = nodes
.attributes.tooltip;
t.content = nodes.attributes.content;
t.icon.inner.loadMovie(nodes
.attributes.image);
t.r.inner.loadMovie(nodes.attributes.image);
t.icon.onRollOver = over;
t.icon.onRollOut = out;
t.icon.onRelease = released;
function over()
//BONUS Section
var sou:Sound = new Sound();
sou.attachSound("sound2");
sou.start();
home.tooltip.tipText.text = this._parent.toolText;
home.tooltip._x = this._parent._x;
home.tooltip._y = this._parent._y - this._parent._height/2;
home.tooltip.onEnterFrame = Delegate.create(this,moveTip);
home.tooltip._alpha = 100;
function out()
delete home.tooltip.onEnterFrame;
home.tooltip._alpha = 0;
function released()
//BONUS Section
var sou:Sound = new Sound();
sou.attachSound("sound3");
sou.start();
home.tooltip._alpha = 0;
for(var i=0;i<numOfItems;i++)
var t:MovieClip = home["item"+i];
t.xPos = t._x;
t.yPos = t._y;
t.theScale = t._xscale;
delete t.icon.onRollOver;
delete t.icon.onRollOut;
delete t.icon.onRelease;
delete t.onEnterFrame;
if(t != this._parent)
var tw:Tween = new
Tween(t,"_xscale",Strong.easeOut,t._xscale,0,1,true);
var tw2:Tween = new
Tween(t,"_yscale",Strong.easeOut,t._yscale,0,1,true);
var tw3:Tween = new
Tween(t,"_alpha",Strong.easeOut,100,0,1,true);
else
var tw:Tween = new
Tween(t,"_xscale",Strong.easeOut,t._xscale,100,1,true);
var tw2:Tween = new
Tween(t,"_yscale",Strong.easeOut,t._yscale,100,1,true);
var tw3:Tween = new
Tween(t,"_x",Strong.easeOut,t._x,200,1,true);
var tw4:Tween = new
Tween(t,"_y",Strong.easeOut,t._y,320,1,true);
var tw5:Tween = new
Tween(theText,"_alpha",Strong.easeOut,0,100,1,true);
theText.text = t.content;
var s:Object = this;
tw.onMotionStopped = function()
s.onRelease = unReleased;
function unReleased()
//BONUS Section
var sou:Sound = new Sound();
sou.attachSound("sdown");
sou.start();
delete this.onRelease;
var tw:Tween = new
Tween(theText,"_alpha",Strong.easeOut,100,0,0.5,true);
for(var i=0;i<numOfItems;i++)
var t:MovieClip = home["item"+i];
if(t != this._parent)
var tw:Tween = new
Tween(t,"_xscale",Strong.easeOut,0,t.theScale,1,true);
var tw2:Tween = new
Tween(t,"_yscale",Strong.easeOut,0,t.theScale,1,true);
var tw3:Tween = new
Tween(t,"_alpha",Strong.easeOut,0,100,1,true);
else
var tw:Tween = new
Tween(t,"_xscale",Strong.easeOut,100,t.theScale,1,true);
var tw2:Tween = new
Tween(t,"_yscale",Strong.easeOut,100,t.theScale,1,true);
var tw3:Tween = new
Tween(t,"_x",Strong.easeOut,t._x,t.xPos,1,true);
var tw4:Tween = new
Tween(t,"_y",Strong.easeOut,t._y,t.yPos,1,true);
tw.onMotionStopped = function()
for(var i=0;i<numOfItems;i++)
var t:MovieClip = home["item"+i];
t.icon.onRollOver = Delegate.create(t.icon,over);
t.icon.onRollOut = Delegate.create(t.icon,out);
t.icon.onRelease = Delegate.create(t.icon,released);
t.onEnterFrame = mover;
function moveTip()
home.tooltip._x = this._parent._x;
home.tooltip._y = this._parent._y - this._parent._height/2;
xml.load("icons.xml");
function mover()
this._x = Math.cos(this.angle) * radiusX + centerX;
this._y = Math.sin(this.angle) * radiusY + centerY;
var s = (this._y - perspective)
/(centerY+radiusY-perspective);
this._xscale = this._yscale = s*100;
this.angle += this._parent.speed;
this.swapDepths(Math.round(this._xscale) + 100);
this.onMouseMove = function()
speed = (this._xmouse-centerX)/10000;
The XML file is:
<icons>
<icon image="icon4.png" tooltip="Baby1" url="
http://www.susystastebuds.com/BirthdaycakeZone.html"
/>
<icon image="icon5.png" tooltip="Wedding Anniversary Zone"
url="
http://www.susystastebuds.com/AnniversaryCakeZone.html"
/>
<icon image="icon6.png" tooltip="The Other Zone" url="
http://www.susystastebuds.com/OtherCakeZone.html"
/>
<icon image="icon7.png" tooltip="Specialty Zone" url="
http://www.susystastebuds.com/Specialitys_Zone.html"
/>
<icon image="icon8.png" tooltip="The Cupcake Zone" url="
http://www.susystastebuds.com/CupCakeZone.html"
/>
<icon image="icon9.png" tooltip="Home Page" url="
http://www.susystastebuds.com/home"
/>
<icon image="icon2.png" tooltip="Birthday Zone" url="
http://www.susystastebuds.com/BirthdaycakeZone.html"
/>
<icon image="icon3.png" tooltip="Wedding Zone" url="
http://www.susystastebuds.com/Weddingcakezone.html"
/>
<icon image="icon1.png" tooltip="Cakes Of The Week" url="
http://www.susystastebuds.com/CakeZone.html"
/>
<icon image="icon10.png" tooltip="Contact Us" url="
http://www.susystastebuds.com/CakeZone.html"
/>
</icons>

Hi,
Looking for help to fix code for a Flash carousal.
I started my web site 3 years ago with a free version of
Flash. I have since purchased Web Premium CS3.
I lost all my original files in a major hard drive crash. (no
backup, I learned). I’m now trying to redo the carousel.
My original site contained a tooltip and a icon.xml that
direct the icon click to a web page.
I have enclosed the Flash code the new carousel I created,
along with the icon.xml file. I have one web page that works using
the same XML file
http://www.susystastebuds.com/CakeZone.html
At this time I’m unable to get new carousel to work on
any other page. I guess the Flash code has changed since the
original one I did. I hope someone is able to provide help as to
why the new one won’t work.
When I click on the icon now, it will close all the other
icons and move up to the left and just stop. Not providing any link
to another web page.
If anbody has the same code in action script in script 3 that
includes the Tooltip and goto url, that would be great.
The Flash action script is:
import mx.utils.Delegate;
import mx.transitions.Tween;
import mx.transitions.easing.*;
var folder:String = "thumbnails/"; // a folder for thumbnail
files + an XML file
var numOfItems:Number;
var radiusX:Number = 300;
var radiusY:Number = 40;
var centerX:Number = Stage.width / 2;
var centerY:Number = Stage.height / 2;
var speed:Number = 0.02;
var perspective:Number = 3;
var home:MovieClip = this;
theText._alpha = 0;
var tooltip:MovieClip =
this.attachMovie("tooltip","tooltip",10000);
tooltip._alpha = 0;
var xml:XML = new XML();
xml.ignoreWhite = true;
xml.onLoad = function()
var nodes = this.firstChild.childNodes;
numOfItems = nodes.length;
for(var i=0;i<numOfItems;i++)
var t = home.attachMovie("item","item"+i,i+1);
t.angle = i * ((Math.PI*2)/numOfItems);
t.onEnterFrame = mover;
t.toolText = nodes
.attributes.tooltip;
t.content = nodes.attributes.content;
t.icon.inner.loadMovie(nodes
.attributes.image);
t.r.inner.loadMovie(nodes.attributes.image);
t.icon.onRollOver = over;
t.icon.onRollOut = out;
t.icon.onRelease = released;
function over()
//BONUS Section
var sou:Sound = new Sound();
sou.attachSound("sound2");
sou.start();
home.tooltip.tipText.text = this._parent.toolText;
home.tooltip._x = this._parent._x;
home.tooltip._y = this._parent._y - this._parent._height/2;
home.tooltip.onEnterFrame = Delegate.create(this,moveTip);
home.tooltip._alpha = 100;
function out()
delete home.tooltip.onEnterFrame;
home.tooltip._alpha = 0;
function released()
//BONUS Section
var sou:Sound = new Sound();
sou.attachSound("sound3");
sou.start();
home.tooltip._alpha = 0;
for(var i=0;i<numOfItems;i++)
var t:MovieClip = home["item"+i];
t.xPos = t._x;
t.yPos = t._y;
t.theScale = t._xscale;
delete t.icon.onRollOver;
delete t.icon.onRollOut;
delete t.icon.onRelease;
delete t.onEnterFrame;
if(t != this._parent)
var tw:Tween = new
Tween(t,"_xscale",Strong.easeOut,t._xscale,0,1,true);
var tw2:Tween = new
Tween(t,"_yscale",Strong.easeOut,t._yscale,0,1,true);
var tw3:Tween = new
Tween(t,"_alpha",Strong.easeOut,100,0,1,true);
else
var tw:Tween = new
Tween(t,"_xscale",Strong.easeOut,t._xscale,100,1,true);
var tw2:Tween = new
Tween(t,"_yscale",Strong.easeOut,t._yscale,100,1,true);
var tw3:Tween = new
Tween(t,"_x",Strong.easeOut,t._x,200,1,true);
var tw4:Tween = new
Tween(t,"_y",Strong.easeOut,t._y,320,1,true);
var tw5:Tween = new
Tween(theText,"_alpha",Strong.easeOut,0,100,1,true);
theText.text = t.content;
var s:Object = this;
tw.onMotionStopped = function()
s.onRelease = unReleased;
function unReleased()
//BONUS Section
var sou:Sound = new Sound();
sou.attachSound("sdown");
sou.start();
delete this.onRelease;
var tw:Tween = new
Tween(theText,"_alpha",Strong.easeOut,100,0,0.5,true);
for(var i=0;i<numOfItems;i++)
var t:MovieClip = home["item"+i];
if(t != this._parent)
var tw:Tween = new
Tween(t,"_xscale",Strong.easeOut,0,t.theScale,1,true);
var tw2:Tween = new
Tween(t,"_yscale",Strong.easeOut,0,t.theScale,1,true);
var tw3:Tween = new
Tween(t,"_alpha",Strong.easeOut,0,100,1,true);
else
var tw:Tween = new
Tween(t,"_xscale",Strong.easeOut,100,t.theScale,1,true);
var tw2:Tween = new
Tween(t,"_yscale",Strong.easeOut,100,t.theScale,1,true);
var tw3:Tween = new
Tween(t,"_x",Strong.easeOut,t._x,t.xPos,1,true);
var tw4:Tween = new
Tween(t,"_y",Strong.easeOut,t._y,t.yPos,1,true);
tw.onMotionStopped = function()
for(var i=0;i<numOfItems;i++)
var t:MovieClip = home["item"+i];
t.icon.onRollOver = Delegate.create(t.icon,over);
t.icon.onRollOut = Delegate.create(t.icon,out);
t.icon.onRelease = Delegate.create(t.icon,released);
t.onEnterFrame = mover;
function moveTip()
home.tooltip._x = this._parent._x;
home.tooltip._y = this._parent._y - this._parent._height/2;
xml.load("icons.xml");
function mover()
this._x = Math.cos(this.angle) * radiusX + centerX;
this._y = Math.sin(this.angle) * radiusY + centerY;
var s = (this._y - perspective)
/(centerY+radiusY-perspective);
this._xscale = this._yscale = s*100;
this.angle += this._parent.speed;
this.swapDepths(Math.round(this._xscale) + 100);
this.onMouseMove = function()
speed = (this._xmouse-centerX)/10000;
The XML file is:
<icons>
<icon image="icon4.png" tooltip="Baby1" url="
http://www.susystastebuds.com/BirthdaycakeZone.html"
/>
<icon image="icon5.png" tooltip="Wedding Anniversary Zone"
url="
http://www.susystastebuds.com/AnniversaryCakeZone.html"
/>
<icon image="icon6.png" tooltip="The Other Zone" url="
http://www.susystastebuds.com/OtherCakeZone.html"
/>
<icon image="icon7.png" tooltip="Specialty Zone" url="
http://www.susystastebuds.com/Specialitys_Zone.html"
/>
<icon image="icon8.png" tooltip="The Cupcake Zone" url="
http://www.susystastebuds.com/CupCakeZone.html"
/>
<icon image="icon9.png" tooltip="Home Page" url="
http://www.susystastebuds.com/home"
/>
<icon image="icon2.png" tooltip="Birthday Zone" url="
http://www.susystastebuds.com/BirthdaycakeZone.html"
/>
<icon image="icon3.png" tooltip="Wedding Zone" url="
http://www.susystastebuds.com/Weddingcakezone.html"
/>
<icon image="icon1.png" tooltip="Cakes Of The Week" url="
http://www.susystastebuds.com/CakeZone.html"
/>
<icon image="icon10.png" tooltip="Contact Us" url="
http://www.susystastebuds.com/CakeZone.html"
/>
</icons>

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