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Idea: accelerometer guided "panorama" photos

Hi all
I don't really know where to post this. I recently browsed the market for a "panorama" type of application like many phones come out with standard. I couldn't find anything but it got me thinking that it would be awesome if a camera app could "stitch" together photographs using the angular co-ordinates provided by the accelerometer (at least relative co-ordinates between successive photographs). This would allow "panorama" like photographs to be stitched together on the horizontal as well as the vertical axes.
Do you think this will be possible? (considering the phones processing power etc.)
I know the some camera apps record the [X,Y,(Z)] coordinates from the GPS for geo-tagging, but can the accelerometer's angular co-ordinates also be recorded on the photo e.g. [rho,theta, phi]?
I would like to hear your comments

leonpierresusan said:
Hi all
I don't really know where to post this. I recently browsed the market for a "panorama" type of application like many phones come out with standard. I couldn't find anything but it got me thinking that it would be awesome if a camera app could "stitch" together photographs using the angular co-ordinates provided by the accelerometer (at least relative co-ordinates between successive photographs). This would allow "panorama" like photographs to be stitched together on the horizontal as well as the vertical axes.
Do you think this will be possible? (considering the phones processing power etc.)
I know the some camera apps record the [X,Y,(Z)] coordinates from the GPS for geo-tagging, but can the accelerometer's angular co-ordinates also be recorded on the photo e.g. [rho,theta, phi]?
I would like to hear your comments
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this goes in the apps section... preferably in the "request an app" thread or a new thread to get noticed, but i doubt anyone would develop this anytime soon.

Not sure if this is worse the effort... there is a (or several) quite good programs around that will stitch your randomly-dropped-in-a-folder together (on you PC) which works nice and smooth. (photostitcher for example)

I don't know what all the discouragement is about. My wife's phone (Motorola Zine) does this without an accelerometer and a processor that is anemic in comparison to the G1. I think it absolutely could be done on the G1, or more generically Android. Getting someone to develop it is another question.

Street View
I guess you got this idea while seeing the Street View.
I had the same thought of acctualy integrating it with a map program like the HTC Footprints where I can make my own street view photo of places i like and want to share with frnds....
If this is possible we would help google get more street views and also let frnds and family experience what you can see where u r standing....
Would just love to have an app like tht
We should look at doing things on the mobile.... on the go....

Start asking your questions in the right sub-forum (Q&A) (Theme) or even in (General), or simply search.......Final result can or will be issuing a ban for you up too 3 days or more.
Thanks
Thread Trashed!!

[Q] questions about my imate ultimate 9502

hi....I am a newbie here on this forum. I have an I-mate ultimate 9502 with WM6.1 OS (i guess it's called OS, right?). I have several questions as to how I can make the most out of it.
1. Are there reliable blogs or unabridged articles that state ALL the features (not the basics) the 9502 is capable of, and tips & tricks on how to use them at their utmost level.
2. Regarding the camera, the photo taken at the first time the camera has been switched on is bright and acceptable while the next photos are either dim or blueish. I also don't understand the option Metering Mode (Frame Average, Center Weighted & Spot Metering). If you kindly please explain how this things appropriately work.
3. Is it recommended for it to be used with its default state than having SPB mobile shell installed in it.
4. And, finally (i guess), is I-mate ultimate 9502 obsolete now? and what happened to I-mate? Why is their website not accessible? Where can I find official support for I-mate phones?
Thank you very much. I have more questions but I can't think of them all right now, maybe next time.

I'm not sure at all about your phone, I only know Android.
...but, I do know a little about photography, or at least enough to help you out.
Metering is essentially how the camera decides to expose the photograph, or in other words - brighten or darken. Average takes the average light level & brightens or dims as needed for the average. This is probably the default, and should work fine for general settings. Center-weighted bases it's calculation on the center of the frame. If the center is fairly bright but the subject is off-center and in the shadows, your photo and subject will come out underexposed. Spot is similar to center, but is wherever the camera is focused.
As for the rest, I'm lost, sorry.

plainjane said:
I'm not sure at all about your phone, I only know Android.
...but, I do know a little about photography, or at least enough to help you out.
Metering is essentially how the camera decides to expose the photograph, or in other words - brighten or darken. Average takes the average light level & brightens or dims as needed for the average. This is probably the default, and should work fine for general settings. Center-weighted bases it's calculation on the center of the frame. If the center is fairly bright but the subject is off-center and in the shadows, your photo and subject will come out underexposed. Spot is similar to center, but is wherever the camera is focused.
As for the rest, I'm lost, sorry.
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thanks po to your reply. I now undestand the difference of those options. It will help me make use of my camera even much often. Thanks again po.

[Q] App Development Help

Thanks for the help!

SMBulls9 said:
Hi,
I am trying to develop an app, with little experience of WP7, on Visual Studio Ultimate 2010, in C#. The app I am trying to develop needs to be able to take your pulse using the flash of the camera to illuminate your finger and then detect the changes in brightness to calculate it. To do this, would I be better off recording a video for like ten seconds in the background (the UI will just be text that says place your finger over the lens) or would I need to use a while loop and have it take a picture like every 40 milliseconds then have will flip through the pictures and see how often a dark spot comes up or something? Any code examples or links would be greatly appreciated. Thanks!
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Well, I didn't caught the idea of the app you want to develop, but if I understood you right and you want to measure pulse by taking photos/videos of a finger, it looks like some kind of science fiction. Just imagine the accuracy needed for such calculations and how will you keep you finger still.
Talking about video: if I am not mistaken all the currently existing background agents are restricted to use Camera API, may be I'm a bit wrong here.
For learning C# for Windows Phone 7 it is good to begin from MSDN and bunch of code samples stored there or a book.
Best regards.

This is actually already being done on other smartphone platforms; hell, people are using smartphone sensors for all kinds of crazy things, including a number of medical applications.
Given that the highest pulse you're ever likely to encounter is about 240 BPM / 4Hz (250ms between beats), 40ms resolution seems more than needed. That said, that's only 25 FPS, while I believe the video camera shots at 30 FPS (33ms). However, taking pictures probably won't work so well because of the need to JPEG-compress the images after taking them (I think the camera API *always* does this, though I might be wrong). Using the video stream API seems like a much better idea.
You shouldn't need the background APIs at all; not sure why the guy above me talked about them. My understanding is that these apps just sample for a few seconds, enough to get an accurate reading.
You may get better info in the App Development sub-section of the WP7 D&H forum. That said, don't expect people to write your code for you, especially for something where there's a reasonable chance of it being a commercially viable Marketplace app. I suggest you start with MSDN, but reading the docs and looking at the examples. You can also go look up tutorials and example code online for using the video APIs.

camera applicatio with edge detection crop and basic editing?

Hello developers,
I am a surgeon, and i need a camera application that detects edges automatically and crops the photo then give me basic tools for editing, like if i take a photo of a radiograph projected against an iluminator, camera app should automatically detect the edges of radiograph and crop it. it will save a lot of my time which i can spend on patient care. waiting for your suggestions and answers.
thanking you all in anticipation

Have you tried Google PhotoScan?
I never used it with XRays but I assume the app will understand it as a black and white photo.
https://play.google.com/store/apps/details?id=com.google.android.apps.photos.scanner

thanks rmrbpt. i will try this application

This one is by Microsoft and works very well for document scanning: https://play.google.com/store/apps/details?id=com.microsoft.office.officelens&hl=en

astrophotography mode (exynos)

hello guys good evening everyone, I have an almost vital question for me, does it exist on our notes 20 ultra or can you download some application that allows you to take an astronomical photo of the night sky like google pixels? I mean with the classic 4 minutes of exposure, I tried to put the timer to the maximum (30 seconds) but the photos are worthless they are full of noise, does anyone have a solution? why samsung still insists on not wanting to add this thing? thank you all

Scintilla85 said:
hello guys good evening everyone, I have an almost vital question for me, does it exist on our notes 20 ultra or can you download some application that allows you to take an astronomical photo of the night sky like google pixels? I mean with the classic 4 minutes of exposure, I tried to put the timer to the maximum (30 seconds) but the photos are worthless they are full of noise, does anyone have a solution? why samsung still insists on not wanting to add this thing? thank you all
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You are not properly setting your pro mode. I take wonderful pictures at 13 seconds to 30. There is no app. But I can assure you with proper iso and shutter setting it can be done

Because of the lense/sensor size and their limited light gathering abilities smartphones aren't ideal candidates for this.
Cooling the cmos sensor will lower the noise floor.