From: albe albo <richter1956@yahoo.com>

Date: February 10, 2010 4:54:41 PM MST

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Astro & DMK ROI?

Thank you Milton,

even the simple reduced disk space used is a nice and useful option, isn't it?

Perhaps it is very hard and time consuming to implement.

For the moon of course it's useless but for the planets it would be very precious.

Lately with Mars i'm wasting lot of gigabytes  of black unused screen.

Since my mount is fairly precise the planet doesn't wander so much so i could easily set a smaller rectangle. 

Even if the bandwidth/framerate remain the same i guess that the disk would work better for the smaller amount of data that will be written.

....

TTYL

Da: Milton Aupperle <milton@outcastsoft.com>

A: Astro_IIDC@yahoogroups.com

Inviato: Mer 10 febbraio 2010, 23:14:49

Oggetto: Re: [Astro_IIDC] Astro & DMK ROI?

Hi Alberto;

The TIS FireWire IIDC cameras do not support Hardware ROI. They only support fixed sizes (Format 0, 1 or 2) which do not have ROI capability. Only cameras that support Format 7 may be capable of doing ROI.

TIS FireWire cameras only support a cropped software ROI. So you get no improvement in through put at all and are using up the same amount of bandwidth, same frame rate etc.

I could probably  implement it, but it would be only setting a cropping rectangle in the preview. window Then frame grabs and recorded movies would be "cropped" in software and written to disk. The only thing it does is reduce the amount of disk space used for frames and movies. It would be much the same as how the Format 7 code operates now, you pick a width, height and the left / top corner where to set the cropping too.

HTH..

Milton Aupperle

On 10-Feb-10, at 2:57 PM, albe albo wrote:

Hello to all,

since i noticed some topics related to possible AIIDC features I ask for a question too.

Yesterday a guy told me that the TIS Winzoz software allows the ROI with the DMK cameras.

Until today i assumed that ROI is impossible to do with DMK cameras so i never wondered about it.

That guy made me very curious ...

Of course this question is addressed to the only one man that can answer... guess who.

Cheers!

Alberto