Comments for Enterra Technical Articles and Reviews

Comment on Custom Camera applications development using iPhone SDK by admin

admin — Thu, 17 Sep 2009 09:13:21 +0000

1. Yes, since you have CGImageRef instance, you can get any image-related information using set of CGImage* functions (like CGImageGetBitsPerPixel). If you need raw pixel data, you can use CGImageGetDataProvider and CGDataProviderCopyData. There are a few useful links:

http://developer.apple.com/mac/library/qa/qa2007/qa1509.html
http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone
http://stackoverflow.com/questions/448125/how-to-get-pixel-data-from-a-uiimage-cocoa-touch-or-cgimage-core-graphics

2. I think you cannot modify that frozen image directly – you should use a view (UIImageView) that contains required filter (image) and overlays that frozen image. Simply add the view as a subview above the frozen image view.

Please notice that SDK 3.x provides completely different UIImagePicker views and the article and sample code need to be rewritten.

Comment on Custom Camera applications development using iPhone SDK by Alessandro

Alessandro — Wed, 16 Sep 2009 15:49:47 +0000

another question: can I also superpose an image on the forzen image? can i for instance use a filter that print a glass and mustache mask on the screen and then, behind have the taken picture?

thanks again,
Alex

Comment on Custom Camera applications development using iPhone SDK by Alessandro

Alessandro — Wed, 16 Sep 2009 15:47:53 +0000

Great article, really!
thanks for your help.
can I also in some way get information out of this sfrozen picture as for instance the color of a pixel?

Comment on Human-readable(SEO friendly) URL in Wicket by it-fabrik blog » Human-readable (SEO friendly) URL in Wicket

it-fabrik blog » Human-readable (SEO friendly) URL in Wicket — Fri, 26 Dec 2008 21:44:09 +0000

[...] article at techzone.enterra-inc.com At mygoods.at�we also use a custom UrlCodingStrategy to modify our url with a custom content id [...]

Comment on Custom Camera applications development using iPhone SDK by jakarta08

jakarta08 — Mon, 08 Dec 2008 23:06:13 +0000

Great article! Helped a lot to understand the architecture.
Are you aware that this doesn’t work with OS2.2 however.
The hidden imageRef is gone.

Any ideas how to get the reference to the original image?
BTW: iUniqable crashes with 2.2

Comment on Free Flash Video FLV Player by Niranjan Meegammana

Niranjan Meegammana — Wed, 23 Apr 2008 05:42:03 +0000

Hi
Mikhail Pieson

Your player was just integrated to our e Learning Software
Thanks it took the system to a new level and possible break throgh for our project phase II

Niranjan

Comment on GWT: improving performance by Alexey Harlamov

Alexey Harlamov — Tue, 19 Feb 2008 08:24:58 +0000

Rajesh,

Yes you are right. This can be a possible security hole. That is why we are keen to see innerHtml rendering support from GWT compiler. When the code generation will be done by an automatically generated code, probability of XSS hole will be subtile.

Comment on GWT: improving performance by Renat Akhmerov

Renat Akhmerov — Tue, 19 Feb 2008 08:16:08 +0000

Hi, Ed

Thank you for your note, looks like it makes a lot of sense to do your way

Comment on GWT: improving performance by Rajesh Venkatesan

Rajesh Venkatesan — Tue, 19 Feb 2008 06:55:24 +0000

Hi,

Seems like an interesting option. But GWT has explicitly stated that use of inner html is a potential cause of XSS atacks. Any thoughts on that?

http://groups.google.com/group/Google-Web-Toolkit/web/security-for-gwt-applications

Rajesh V

Comment on GWT: improving performance by Ed

Ed — Mon, 18 Feb 2008 09:26:07 +0000

Hi Renat,

I was looking a bit more at your code, and I think I could be a bit more optimized by optimizing the method DOM.getElementById() usage….
Now this method will search the whole dom tree. It’s better to search the tree from the parent down, which is know by forehand… (I noticed this in other gwt related projects )…

Comment on GWT: improving performance by Rudolf Michael

Rudolf Michael — Wed, 13 Feb 2008 11:05:08 +0000

Hello,
Intresting article…
We’re also moving to GWT and i have been working over it since 3 months now. I totaly agree with you on the HTML segment part, we have already figured out that doing the design using pure html and css is much much faster then using the GWT Panels components. what we are doing right now is retrieving the HTML page using an HTTP Request, then every Class/HTML Page will update its HTML code by creating and setting the widgets. we have used HTMLPanel to load the html pages and then use panel.add(Widget, htmlID) to add the widgets, everytime the page has finished loading its widgets. we’re adding it to the RootPanel, our RootPanel consits of one static html page where it contains html ID. the problem is that i still have some performance issues specially if a registration page has like 80 widgets to set where every widget has an http call to get its data from the server. so i will try to use DOM.setInnerHTML instead of RootPanel().get(”HTMLID”).add(htmlPanel); do you know which one is faster to execute?

Comment on Video for Web: storage, access, system deployment variants by admin

admin — Wed, 13 Feb 2008 06:43:50 +0000

Hello, jeffsters.

Thank your for your note. Actually, we didn’t consider Mac solutions in this document. Maybe the next edition will include deployment variant for Leopard server. Podcast Producer, QT Broadcaster etc. are really powerful tools to be ignored. As about Quick time Streaming Server and Darwin streaming server, they are almost identically. The main difference is that QTSS is supported and DSS is not.

Comment on Video for Web: storage, access, system deployment variants by jeffsters

jeffsters — Thu, 10 Jan 2008 18:36:25 +0000

Why did you use Darwin as your Apple example and not the Full version in Leopard Server? Like the MS Version it too requires the installation and cost of the Server software however it’s still much less and has a robust suite of tools you’ve ignored.