camera with high framerate

camera with high framerate

[rath]

Hi,

I'm searching a v4l supported webcam with a framerate higher than 30fps. I 
found the Playstation Eye and it seems to have a framerate of up to 120fps 
@320x240 pixels.
Does this camera support a resolution of 160x120 pixels? How are the images 
transfered over usb (jpeg, rgb, yuv)?

Are there any other cameras avaiable with a minimum framerate of 60fps?

Regards, Joern 

Re: camera with high framerate

[Jean-Francois Moine]

On Sat, 16 Jan 2010 18:33:54 +0100
"rath" <mailings@hardware-datenbank.de> wrote:

> I'm searching a v4l supported webcam with a framerate higher than
> 30fps. I found the Playstation Eye and it seems to have a framerate
> of up to 120fps @320x240 pixels.
> Does this camera support a resolution of 160x120 pixels? How are the
> images transfered over usb (jpeg, rgb, yuv)?

Hi Joern,

The resolutions are only 640x480 and 320x240. The images are transfered
in YUYV (16 bits YUV 4:2:2).

Regards.

-- 
Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
Jef		|		http://moinejf.free.fr/

Re: camera with high framerate

[rath]

Okay, are there some other cameras avaiable with 160x120 pixels or output in 
rgb? I only have an ARM Cortex-A8 with 500MHz to process the image data and 
converting between different pixelformats take a long time. So it would be 
fine if a resolution of 160x120 pixels is supported or the output is in rgb.

----- Original Message ----- 
From: "Jean-Francois Moine" <moinejf@free.fr>
To: "rath" <mailings@hardware-datenbank.de>
Cc: <linux-media@vger.kernel.org>
Sent: Saturday, January 16, 2010 7:14 PM
Subject: Re: camera with high framerate


On Sat, 16 Jan 2010 18:33:54 +0100
"rath" <mailings@hardware-datenbank.de> wrote:

> I'm searching a v4l supported webcam with a framerate higher than
> 30fps. I found the Playstation Eye and it seems to have a framerate
> of up to 120fps @320x240 pixels.
> Does this camera support a resolution of 160x120 pixels? How are the
> images transfered over usb (jpeg, rgb, yuv)?

Hi Joern,

The resolutions are only 640x480 and 320x240. The images are transfered
in YUYV (16 bits YUV 4:2:2).

Regards.

-- 
Ken ar c'hentañ |       ** Breizh ha Linux atav! **
Jef | http://moinejf.free.fr/

Re: camera with high framerate

[Michael Trimarchi]

rath wrote:
> Okay, are there some other cameras avaiable with 160x120 pixels or 
> output in rgb? I only have an ARM Cortex-A8 with 500MHz to process the 
> image data and converting between different pixelformats take a long 
> time. So it would be fine if a resolution of 160x120 pixels is supported 
> or the output is in rgb.

ov538-ov7690 solution

static const struct v4l2_pix_format vga_mode[] = {

        { 176, 144, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
         .bytesperline = 176 * 2,
         .sizeimage = 176 * 144 * 2,
         .colorspace = V4L2_COLORSPACE_SRGB,
         .priv = size176_144 },

I think that it has the 160x120 resolution too, but I don't write the code for that.
The sensor arrive at 60 fps in QVGA mode

Michael

> 
> ----- Original Message ----- From: "Jean-Francois Moine" <moinejf@free.fr>
> To: "rath" <mailings@hardware-datenbank.de>
> Cc: <linux-media@vger.kernel.org>
> Sent: Saturday, January 16, 2010 7:14 PM
> Subject: Re: camera with high framerate
> 
> 
> On Sat, 16 Jan 2010 18:33:54 +0100
> "rath" <mailings@hardware-datenbank.de> wrote:
> 
>> I'm searching a v4l supported webcam with a framerate higher than
>> 30fps. I found the Playstation Eye and it seems to have a framerate
>> of up to 120fps @320x240 pixels.
>> Does this camera support a resolution of 160x120 pixels? How are the
>> images transfered over usb (jpeg, rgb, yuv)?
> 
> Hi Joern,
> 
> The resolutions are only 640x480 and 320x240. The images are transfered
> in YUYV (16 bits YUV 4:2:2).
> 
> Regards.
>