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AW: image-acquisition package install

From: Dominic Bitter
Subject: AW: image-acquisition package install
Date: Tue, 6 Dec 2016 14:28:08 +0100

@Kire Pudsje

Is there a way to load a section of a snapshot, without getting the full image first?




Von: Kire Pudsje [mailto:address@hidden
Gesendet: Sonntag, 4. Dezember 2016 19:55
An: Dominic Bitter <address@hidden>
Cc: Nicholas Jankowski <address@hidden>; Andreas Weber <address@hidden>; address@hidden
Betreff: Re: image-acquisition package install


And an updated version. Everything except help and live-preview should work now.

I also implemented the set function like the image-acquisition package, to give back the range and step size for the setting.

I will not be trying to get live preview to work. Next step is integrating it in the image-acquisition package. With a little lick I can re-use their preview stuff.


2016-12-02 22:58 GMT+01:00 Dominic Bitter <address@hidden>:

Hello Kire,

thanks for the code.


I have a Matlab script from a colleague which (if i remeber it right) is able to get live images from USB cams.

Sadly i can’t get a Matlab license for me there.

If it can help you i can ask him on Monday and send you the file.


Von: Kire Pudsje [mailto:address@hidden]
Gesendet: Freitag, 2. Dezember 2016 20:49
An: address@hidden; address@hidden; address@hidden; address@hidden
Betreff: Re: image-acquisition package install




I am busy implementing webcam support on Windows.

I based it on the interface described by the webcam package of matlab


It is currently in a very early and rough stage. No help yet, very dirty code, etc. I only managed to get it working today, but it can already obtain images. Also Brightness, backlight etc, can be set. No resolution control at the moment.

Once I have everything working, I might try and integrate it in the img-acq package.


>> pkg load webcam
>> webcamlist
ans =
  [1,1] = VGA Webcam
  [2,1] = HD 720P Webcam
>> cam=webcam(1);
warning: This is work in progress, be prepared for segfaults
warning: called from
    webcam at line 8 column 15
>> cam.get()
ans =

  scalar structure containing the fields:

    Name = VGA Webcam
    Resolution = 640x480
    AvailableResolutions =
      [1,1] = 640x480
      [2,1] = 640x360
    Brightness = 0
    Contrast =  32
    Hue = 0
    Saturation =  64
    Sharpness =  4
    Gamma =  221
    WhiteBalance = auto
    BacklightCompensation = off
    Exposure = auto



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