Comments on: Mowecam: Mobile Web Camera

By: Jens

Jens — Wed, 28 Nov 2007 19:02:20 +0000

Hi
Did You ever found a backup of your Mowecam source code? I’ve just got a new SE phone and thinking of using the old K750i as a surveillance camera with motion detection and SMS support. This could be a great and cheap way to install a GSM alarm at home. You had similar ideas, did You ever go on with it?
Great work
Regards Jens

By: miguel ribeiro

miguel ribeiro — Mon, 29 Oct 2007 17:42:51 +0000

Hi, great sw! is it possible to send the full 2 mb image from k750 to the server? And is it possible to send it only on demand( instead of periodically, when the user clicks a button for instance?)
Thank you

David says:
The latest version of Mowecam will capture an image with the DEFAULT resolution of the mobile phone. Different mobile phones have different resolution sizes.
Mowecam will send a picture when you hit START so you can do START/STOP manually every time you want to send a picture.

By: piero

piero — Mon, 17 Sep 2007 15:30:12 +0000

installed on Nokia N80. set lowest image size 120x160and 60 secs refresh rate. I get 960KB/picture to upload. Any suggestion ro reduce picture size ? Thank You, regards, P

David says:
The image size dialog is not being used. Instead the mobile phone default size is used when taking a snapshot.
Unfortunately my laptop with the source code was recently stolen. If I don’t find a back up of the source it is unlikely I will develop Mowecam any further.

By: joost

joost — Thu, 31 May 2007 16:03:50 +0000

Hi David,
Great app! I’m trying to build a J2ME app myself that captures pictures from the camera, but can’t get it working on my K750i. So I’m really curious what your code looks like as MoweCam seems to work on my K750i! Could you please send me your source code (or the picture capturing part)? I would be really grateful!

David says:
I remember there being an annoying “feature” in the media API which prevented me innitially from taking pictures via j2me.
Have you followed online image capturing examples? Especially the one on the SonyEricsson development site.
My laptop was recently stolen and together with it the source code to a few personal projects that were not in a remote CVS 🙁

By: sarbjit

sarbjit — Thu, 22 Mar 2007 10:35:07 +0000

hi David,
It is a good application.I have suggestion to you that you can make more this program more productive by enabling support with IM chatting applications such as Yahoo! messenger on pc with bluetooth interface

By: wayne

wayne — Mon, 20 Nov 2006 09:29:33 +0000

Hi, can you teach me how to use byte array from getSnapshot operation for motion detection which relies only on RGB format. Thanks in advance.

David says:
Roughly:
1. Calculate intensity for each pixel (there is a formula to go from RGB to intensity)
2. Calculate difference in intensity between two snapshots for each pixel
3. Mark pixels with more than a threshold change in intensity
4. Group marked pixels into blobs
5. If the size of one or more blobs is above a threshold, motion occurred
roughly

By: Gobilam Akanip

Gobilam Akanip — Thu, 09 Nov 2006 01:11:25 +0000

If you add the MIDlet-Permissions:
javax.microedition.io.Connector.file.read, javax.microedition.io.Connector.file.write
Will the saving in memory stick work on a K750?

David says:
Hello Gobilam, the problem is that certain mobile phones do not support to the PIM profile required for saving photos locally so I have opted to exclude it from the application to support as many devices as possible.
One alternative in the future would be to build several version to different mobile phones… but where is the time?
🙂

By: domingos

domingos — Fri, 13 Oct 2006 19:35:52 +0000

how can i put my photos in the g2 galley like u , i am have problems. do you have a gallery like me… can u help me

By: andrew

andrew — Fri, 30 Jun 2006 00:15:33 +0000

hi, brief one and only because I thought it would be a cheaper alternative.
it would be useful to have the option instead of uploading the image to send it via bluetooth to another computer. That way if you were at home, you could just send it to a machine in the house (which could then upload it) I saying this because this is what i do – was interested by your project because it allows the automation of the procedure for taking the pictures, currently my app just takes one and sends one (not flashy at all!)
great work best wishes
andrew

David says:
Hello Andrew,
Bluetooth is fairly easy to develop with on the mobile but a client would be required on the computer.
It would be a fair amount of work to develop such a client for different operating systems.
At the moment I want to focus on J2me development!

By: Kaoru

Kaoru — Mon, 17 Apr 2006 20:08:54 +0000

Hi David, I’ve been always interested in these kind of app.
Unfortunately, in my country the network cost is high and I would have to limit my use of it.
Is it possible instead of sending the pics to a server, keep them in my mobile and later to a computer?
Thanks.

David says:
Hello Kaoru! The “save to mobile” function is only supported on a limited amount of devices.
When I first included the function, the application stopped working on several devices. I wanted to support as many mobile phones as possible so I removed the function.
I suspect that in near future majority of handsets will support this functionality (JSR-75, FileConnection API) and I will add it back into Mowecam.