How do you lighten a moving object?

I have video of a person who keeps moving out of his spotlighting. Is there any way to "mask" a moving object and they brighten only that whilst leaving the background in tact?
Hoping for a miracle!
Yes... I'm grasping at straws

Is there any way to "mask" a moving object and they brighten only that whilst leaving the background in tact?
Yes. It won't be easy though. You could duplicate the clip then use a multi-point garbage mask but you'll have to keyframe frame-by-frame.
Alternatively, you could try applying the 3 Way Color Corrector filter and using the Limit Effect feature IF the subject's coloring is distinct enough from the background.
-DH

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How do you track a moving object using Labview and Vision Assistant

I am using Vision and Labview to create a program that tracks and follow a moving object using a high end camera. Basically what it does is it detects a foreign object and locks on to it and follows it where ever it goes in a control sized room.
I have no idea how to do this. Please help. Or is there an available example.
Thanks.

Hello,
It sounds like you want to look into a Vision technique called Pattern Matching. Using our Vision tools, you can look for a image, called a template, within another image. Vision will scan over the entire image of interest trying to see if there are any matches with the template. It will return the number of matches and their coordinates within the image of interest. You would take a picture of the object and use it as the template to search for. Then, take a picture of the entire room and use pattern matching to determine at what coordinates that template is found in the picture. Doing this multiple times, you can track the movement of the object as it moves throughout the room. If you have a motion system that will have to move the camera for you, it will complicate matters very much, but would still be possible to do. You would have to have a feedback loop that, depending on where the object is located, adjusts the angle of the camera appropriately.
There are a number of different examples a that perform pattern matching. There are three available in the example finder. In LabVIEW, navigate to "Help » Find Examples". On the "Browse" tab, browse according to "Directory Structure". Navigate to "Vision » 2. Functions". There are examples for "Pattern Matching", "Color Pattern Matching", and "Geometric Matching". There are also dozens of pattern matching documents and example programs on our website. From the homepage at www.ni.com, you can search in the top-right corner the entire site for the keywords, "pattern matching".
If you have Vision Assistant, you can use this to set up the pattern matching sequence. When it is complete and customized to your liking, you can convert that into LabVIEW code by navigating to "Tools » Create LabVIEW VI..." This is probably the easiest way to customize any type of vision application in general.
I hope this helps you get started. Take care and good luck!
Regards,Aaron B.
Applications Engineering
National Instruments

How do you filter out moving objects in a movie?

Hello!
I'v searched the internet for solutions to this but I cann't find any.
Im prittie new and I need to make a house on fire while two guys (one is me)
will be walking away from it, towards the camera.
I want to filter out these two guys and only apply fire and flames to the house itself!
To do this I used Time Diffrence and tried to isolate the guy using Fast Blur and Luma Key
but Im prittie lost.. Nothing works and I really need guidence
Do you know a trick to use?
I cant do greenscreening as the green background would cost a fortune..
But isn't there anyway to filter out moving objects?

I'm not sure that you totally get the process. This kind of shot requires at least 3 elements or plates. These three plates become three layers in After Effects. The bottom layer would be the Background Plate which is a shot of the house without any actors in the shot. The next plate would be the Effect Plate or Fire Plate which could be any shot you can get or generate through plug-ins of flames. The top layer would be your Foreground Plate or your two actors.
Now that you know what you need you can plan your shoot. The background plate is easy. Just set the camera on a tripod and lock it off. NO zooming. No panning, No change of focus. The foreground plate is also easy. You don't have to green screen the entire set, all you need to do is to put a green screen behind your actors. I do this kind of thing all the time using a 6' X 6' (sometimes smaller) green screen (or blue or red or purple) made of fabric and stretched over a frame that I made from 1/2" EMT electrical conduit and 4 90º elbow connectors for less than $20 at Home Depot or Lowes. You get a couple of assistants to walk behind your actors holding the green screen behind them. If you need to include their feet they can be easily rotoscoped out later and you can garbage matte everything else. If it's impossible to green screen the shot then you are stuck with roto, but that's much easier in CS5 using the roto brush. If you use your show with the actors as the background plate roto is even easier because you can hide a multitude of sins by simply feathering the roto and letting the fire light wrap around the actors a bit.
The fire plate can be purchased footage, or you could shoot a real fire against a black background, or you could create the flames using AE or even a 3D app like Blender (free) or a bunch of other apps.
Making the shot look real requires a few tricks once you have your clean plates. Fire creates light so you've got to add lighting effects to the background plate to sell the fire. You've also got to wrap light around your actors. Look for tutorials on light wrap for this. You can really help sell the effect if you place some flickering light sources behind and to the side of your actors when you shoot the foreground (actors) plate.
Once you get a handle on these techniques it's fairly easy to make the transition to pulling of this kind of a shot with a hand held camera (now you have to learn motion tracking). On a project I recently completed we had to put a fire in a prop fireplace while actors moved around bringing milk and cookies for Santa. It was all roto and the fire was shot at night with nothing more than a black cloth (Duvetyne) behind the fireplace grate. The final composite was 10 layers and was so totally believable that no one questions the shot.
The layers were from top to bottom, reflection in grandmas glasses, light wrap, actors (roto of original background plate), fire flicker layer, color mask layer (more orange around fire, fire glow layer, fire layer in Add mode, second fire layer in screen mode, third fire layer Luma keyed, and finally the original plate which contained all the actors, carefully lit with flickering firelight simulated by dangling a stick with fabric cut into 1/2 inch wide strips about one foot long in front of a orange gelled light behind and to the right of the actors.
If I get a chance I'll post a screenshot.
Here you go:
Light Wrap:
The Movie
Part of the original render before color grading.
Enjoy

How do you test any SAP objects before a transport to the production server

How do you test any SAP objects before a transport to the production server?

Hi Rama Krishna,
The actual process is develop the object in development system and unit test there with the available data.
Then move it to Quality server where the data will be the actual replica of production and where the integration testing and ened to end testing happens and also the user acceptance testing happens there.
and once everything is found fine there then it is moved to production system.
Award points if this is helpful.
Regards,
Ravi G

How to desaturate only a moving object???

I am trying desaturate a fast moving object....basically want the person who is moving fast to be in color but everything else desaturated and then vise versa.
Can anyone give me some pointers, I have Color as well if it is easier. I just cant seem to figure this out. All help would be greatly appreciated!
Thanks,

Actually, it sounds like you're trying to desaturate everything but the fast moving object... which leads one to ask how you might isolate that...
If everything is moving (including the camera), you're kinda SOL... however, you might be able to use a difference matte filter to get what you're looking for.
Put a copy of your clip on V2, over the same clip on V1. Add a difference matte filter to the clip on V2. Put a clip that's one frame off from your clip into the image well. Things that move slowly will not have much difference frame to frame, things that are moving faster will have more. Adjust your settings so only the moving object generates a mask.
Use color correction on the two clips to achieve your effect...
Patrick

How do you reference a Formular Object on a Crystal Report using Java

Hi all,
I am trying to reference an object on my report which contains a Formula field.
I have read the following 2 threads, but they refer to textObjects:
[How do you reference a textObject on a Crystal report using Java|Re: How do you reference a textObject on a Crystal report using Java?]
[Changing the text of ITextObject programatically|Re: Changing the text of ITextObject programatically]
But I cannot even get those to work. I can reference a object which refers to a database field but as soon as I try
reference a textObject or reportObject I just get a NULL variable.
Below is the code I am useing
IReportObject dbField = reportClientDocument.getReportDefController().findObjectByName("BOB1");
IReportObject textBob = reportClientDocument.getReportDefController().findObjectByName("BOB2");
"BOB1" is the name of my DB field Object, and "BOB2" can be a Text box or a Formula item and I just get nothing.
I have just tested it with a FieldHeadingObject and that returns a valid object, so clearly I am going about this the wrong way
for objects I place on the reports which are not driven by the database items.
Ultimately what I want to do is reference an object in the Report Footer which will contain the RecordCount of the number of
records contained in the report, which I am them going to use to determine if the report holds data,
if it does I will print it, else ignore it and move on the the next report. I am doing this so that I can at an extra filter to split
a report up into groups and produce a sinlge PDF for each group instead of one massive PDF containing all the groups.
So if someone has a solution to any of my problems I would be very greatful, and I dont mind being told Im an idiot and should
rather do it another way, as long as you supply that other way
Thanks for the help
Darren
Edited by: Darren Jackson on Dec 16, 2009 7:29 PM
Forgot to add am using CR4Ev2 SP3

Right I have made some headway.
Firstly, Im an idiot. I was making changes and setting up test fields on my report, but then when running the app, I had it looking at
the backup report, which would explain why all the new textbox fields were not being found.
The stupiditity did force me to delve deep and work out a fair bit of how the reports work, so cant complain too much. BUT, I am still
not able to return values of Formula fields and formulas extra. Could someone tell me if this is even possible. I get retrieve the formula field
name, and properties but not its value once the report has been populated. Am I wasting my time?
Well I will continue dismantling my reports till I find the answer, or someone points me in the right direction.
If any one is interested this is the code I used to drill down to my text boxes:
IReportObject recCount = reportClientDocument.getReportDefController().findObjectByName("TB1");
ITextObject obj_RecCount = (ITextObject) recCount;
System.out.println(obj_RecCount.getName());
Paragraphs objP = obj_RecCount.getParagraphs();
for (int i = 0; i < objP.size(); i++){
     ParagraphElements pE = objP.getParagraph(i).getParagraphElements();
     for (int j = 0;j < pE.size(); j++){
          IParagraphTextElement pEE = (ParagraphTextElement) pE.getParagraphElement(j);
          System.out.println(pEE.getText());
Cheers

How do YOU name classes? (object oriented programming)

I am in the process of learning advanced object oriented design, and I am trying to use it in my personal programming project. I'm having a hard time implementing all of the classes I want for it because I can't think of what to call them.
So, my question is, in object oriented design, how do you name the implementations and abstractions that you make?
In other words, "implementations" can be thought of as "classes", and "abstractions" as "interfaces" in Java or "pure abstract classes" in C++. How do you name the classes and interfaces you make?
For example, do you use prefixes or suffixes on your names, such as "I" for "interface" or "Impl" for "implementation"? Do you add "-able" to the end of the name of an abstraction, such as "Decoratable"? Can you always think of simple logical names for all of your classes, and it just has never been a problem for you?
As an example of how the number of classes quickly grows, the Decorator Pattern will use at least five classes. I have no idea what I would name those in a programming project.

drcouzelis wrote:
Trent wrote:Theoretically speaking, you'll have multiple implementations of the Window interface, which will have their own unique names suggested by their respective purposes. If not, then Window and its implementation should probably be merged into a single class.
Thank you for bringing that up.
How about this: The name of the implementation class will be HOW its implemented followed by the name of the interface.
A "Window" interface would have implementations such as "AllegroWindow", "GTKWindow", or "HaikuWindow".
In a video game, a "Character" interface would have implementations such as "GeneralCharacter", "ControllableCharacter", "PlayableCharacter", or "EnemyCharacter".
Does that sound like a good idea?
Indeed, classes are more specific than interfaces, subclasses are more specific as their superclasses... This should be reflected in their names, the name of a class that implements an interface should somehow make clear exactly what it is (e.g. what kind window). If you have a kind of window (for instance) that is really _just_ a window, nothing else, than the interface should become this class and the implementing classes should become subclasses.

How do you use a TimeZone object?

Hi,
When I did this:
TimeZone tz = TimeZone.getTimeZone("America/Los_Angeles");
GregorianCalendar calendar = new GregorianCalendar(tz, Locale.US);
Date now = calendar.getTime();
System.out.println(now);I expected the current time on my computer to be converted to the time in Los Angeles--but that didn't happen. The code ouputs the current time on my computer. So, I'm left wondering what a TimeZone object is used for?

A TimeZone object is used by a Calendar when you ask it to do date and time arithmetic, and when you set its value. If you say "set the time to 4 am" then the code needs to convert that to an offset relative to a time in GMT, and clearly it would need to know what time zone you meant that 4 am to be in.
But you used a Date object and printed it. Date doesn't have a time zone attribute. Yes, I know you got the Date from a Calendar but since a Date doesn't have a time zone, it can't magically interpret itself in terms of the Calendar you got it from.
Fortunately SimpleDateFormat does have a time zone attribute. So if you want to print a date interpreted in a certain time zone, that's what you would use. And generally you should use SimpleDateFormat to turn dates into text anyway.

How to match filters to moving object using motion tracking ?

Hi:)
Excuse me for imperfect english.
I'd like to perform the famous face wrao effect that I've seen in a tutorial for ADOBE AE.
I've to match move a filter (like distortion-bulge) o a moving object using motion tracking, but i've nit able to perform it.
(I want to distort an eye in a face that moves it)
THanks

Specialcase gives an excellent tutorial here:
http://motionsmarts.com/tutorials/matchmove1/mm1.html
Patrick

How do you create a 3D object in Photoshop CS 3?

I want to practice applying textures and words to a 3 D image in Photoshop CS3. However I don't have a 3-D object to work with. I don't think Photohop allows you to create a 3 D object like a cylinder? If not, any ideas how I can obtain a 3 D image to work with?
David

Strata provides 3D-plug-ins for Photoshop; though I dont know about the prices.
Others may be able to point You to some cheaper or even free applications.
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Beating my brains out: How do you move a 3DS object in order to see it?

Can someone plese explain this to me in nice detailed steps. I just can't seem to get it to work.
OK,
I can load (using the StarFire 3DS loader) 3ds images just fine like this:
Scene theScene = null;
Loader3DS loader = new Loader3DS();
theScene = loader.load("D:\\My3dsFile.3ds");
Some .3ds files I can see just fine. Others look like they need to be scaled/translated. I noticed this by creating a ScaleInterpolator and applying it to the root BranchGroup on one of the .3ds images I could not see like this:
TransformGroup objTrans = new TransformGroup( );
objTrans.setCapability( TransformGroup.ALLOW_TRANSFORM_WRITE );
Transform3D zAxis = new Transform3D( );
zAxis.set(new Vector3f(0.0f, 0.0f, 10.0f));
Alpha xAlpha = new Alpha( -1, //Loop
Alpha.DECREASING_ENABLE |
Alpha.INCREASING_ENABLE,
1000, //trigger time
1000, //phase delay duration
5000, //increasing alpha duration
1000, //increaing alpha ramp duration
1000, //alpha at one duration
1000, //decreasing alpha duration
2000, //decreasing alpha ramp duration
1000 ); //alpha at zero duration
ScaleInterpolator scale = new ScaleInterpolator(xAlpha,
objTrans,
zAxis,
-6.0f,
6.0f);
scale.setSchedulingBounds( getBoundingSphere( ) );
objTrans.addChild(scale);
bgRoot.addChild( objTrans );
objTrans.addChild(theScene.getSceneGroup()); //theScene = .3ds scene
Doing this, I can catch a glimpse of the .3ds image every now and then.
How in the world can you scale a scene and move it to the 0,0,0 position?
All I want to do is load a stinking .3ds image (any .3ds image) and be able to view it! I think if I could scale it and move it to 0, 0, 0 then I should be able to see them.
Please help.
Thanks.

Have you tried to scale the object uniformly at creation, before putting it in a scenegraph? this way at runtime you don't need to worry about objects being to big at runtime...
for the uniform scale:
Transform3D transform = new Transform3D();
transform.setScale(0.02); //try different values here
3ds_object_transform_group.setTransform(transform);
Another thing you could do is to use a 3D modelling program (like 3DS)
and scale the object very very small..
I had the same problem before, hope this helps

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We just completed a few application upgrades and now the objects catindexmethods and textindexmethods are invalid. These are part of our intermedia install but haven't started using it yet. How to I recompile these objects to be valid again?

Did a little deeper and you shall find it:
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Hi,
I would like to find out how to end date an objective in table per_objectives_library.
I have checked HR_OBJECTIVES_API.update_objective but there is parameters there for Valid_from and Valid_to dates. Is there any other API Package that can be used to do this?
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How do you lighten a moving object?

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