I’m trying to do an image capture on a high end Nokia phone (N95). The phone’s internal camera is very good (4 megapixels) but in j2me I only seem to be able to get a maximum of 1360×1020 image out. I drew largely from this example http://developers.sun.com/mobility/midp/articles/picture/
What I did was start with 640×480 and increase the width and height by 80 and 60, respectively until it failed. The line of code is:
jpg = mVideoControl.getSnapshot(‘encoding=jpeg&quality=100&width=’ + width + ‘&height=’ + height);
So the two issues are: 1. The phone throws an exception when getting an image larger than 1360×1020. 2. The higher resolution images appear to be just smoothed versions of the smaller ones. E.g. When I take a 640×480 image and increase it in photoshop I can’t tell the difference between this and one that’s supposedly 1360×1020.
Is this a limitation of j2me on the phone? If so does anyone know of a way to get a higher resolution from within a j2me application and/or how to access the native camera from within another application?
This explanation on Nokia forum may help you.
It says that ‘The maximum image size that can be captured depends on selected image format, encoding options and free heap memory available.’
and
‘It is thus strongly adviced that at least larger images (larger than 1mpix) are captured as JPEG images and in a common image size (e.g. 1600×1200 for 2mpix an so on). Supported common image sizes are dependent on product and platform version.’
So I suggest you to take some tries 1. with 1600×1200, 1024×768 and whatever image resolution your N95 guide mentions 2. with BMP and PNG as well.
Anyway, based on my earlier experiences (that could be outdated), j2me implementations are full of bugs, so there may not be a working solution to your problem.