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Conference bulova::decw_jan-89_to_nov-90

Title:DECWINDOWS 26-JAN-89 to 29-NOV-90
Notice:See 1639.0 for VMS V5.3 kit; 2043.0 for 5.4 IFT kit
Moderator:STAR::VATNE
Created:Mon Oct 30 1989
Last Modified:Mon Dec 31 1990
Last Successful Update:Fri Jun 06 1997
Number of topics:3726
Total number of notes:19516

1173.0. "PAINT and images." by SUBURB::MCDONALDA (Old Elysian with a big D.I.C.) Wed Jul 26 1989 07:06

    Cross posted in Image conference.
    
    I've just got round to using the latest version of DECwindows PAINT
    on some of my bitonal images - especially the dreaded halftone ones.
    
    The ability to actually edit images, scanned at 300dpi, at an effective
    300 dpi (as opposed to PAINT, etc, automatically rendering the image
    down to that of the screen) suddenly makes proposing imaging
    applications alot easier. I can now readily recommend imaging in more
    circumstances.
    
    However, a number of things to report.
    
    First I get two warning messages flagged when I edit 300 dpi images.
    
    1. "Resolution of image cannot be determined. Setting resolution
        to that of display device."
    
    2. "Entire picture will not fit on screen."
    
    Secondly, PAINT gracefully reports an error message when I try and
    edit a colour image. However, I get an ACCVIO when I attempt to
    edit a 256 grey scale image.
    
    Third. Dynamically and reversibly zooming in and out of the image would
    be a great help.
    
    Fourth and finally, when rotating an image, or portion thereof,
    it would be nice to have a 'dial up UI' such that a person does
    not have to enter the number of degrees to rotate the image. Thus,
    at a simple level, when a user selects 'Rotate' an 'icon' appears
    which shows the current orientation of the image. The user then
    has the option of using the mouse to 'grab' the icon and rotate
    it to the desired angle. It would be nice if the image would rotate,
    in real time, with the movement of the mouse, however I don't expect
    to see this until they issue me with a desktop CRAY.
    
    My system is a VS II/GPX, linked to a MIVC. We are running VMS T5.2-1
    and DECwindows V2.
    
    Angus
    

T.RTitleUserPersonal
Name
DateLines
1173.1about paintEPIK::J_JOSEPHHave you seen Jack in the GreenThu Jul 27 1989 13:0152
>    1. "Resolution of image cannot be determined. Setting resolution
>        to that of display device."

    This warning appears because, DDIF file which paint is trying to read in 
    does not yet have any info on the resolution (the scanner does not place 
    any info in the DDIF file) so paint cannot tell what resolution the picture
    is meant to be.  As a default it sets the resolution to the resolution of 
    the display device.  Paint stores the size of the picture in the DDIF file
    (in world units - inches or centipoints, I can't remember) when you save a
    file,  so when reading in a file, it can determine the resolution from the 
    number of pixels divided by the size, (there wasn't a convenient place
    just to store the resolution).  When opening a file which has been saved 
    by paint, this message will not appear.
    
>    2. "Entire picture will not fit on screen."
    This informs the user that the picture is larger in pixels than the size of
    the screen.  It will be necessary to scroll around in order to edit the 
    entire picture.  You may view the entire picture in a scaled form using the
    Full View option from the options menu.
    
>    Secondly, PAINT gracefully reports an error message when I try and
>    edit a colour image. However, I get an ACCVIO when I attempt to
>    edit a 256 grey scale image.
    
    I'll look into this.  Can you give me a pointer th the grey scale image.
    Thanks.
    
>    Third. Dynamically and reversibly zooming in and out of the image would
>    be a great help.

    We'll see.  The zoom function right now gives an 8x zoom of a (variable 
    size) portion of the picture.  Editing becomes very tricky if there is more
    than one picture pixel per screen pixel - so there probably wont be editing
    of the entire picture in a scaled down form (ie.  see the whole thing on the
    screen at once and be able to edit it).
    
>    Fourth and finally, when rotating an image, or portion thereof,
>    it would be nice to have a 'dial up UI' such that a person does
>    not have to enter the number of degrees to rotate the image. Thus,
>    at a simple level, when a user selects 'Rotate' an 'icon' appears
>    which shows the current orientation of the image. The user then
>    has the option of using the mouse to 'grab' the icon and rotate
>    it to the desired angle. It would be nice if the image would rotate,
>    in real time, with the movement of the mouse, however I don't expect
>    to see this until they issue me with a desktop CRAY.

    Paint does not yet support rotation, but it will in the next version.
    

-Jonathan Joseph


1173.2Its great, BUT!YUPPY::CONNOLLYTue Aug 22 1989 07:478
    I think the ability to edit the scanned images is great too, it
    makes it nice and easy to get "clean" images if the scanned original
    is not very good, although i have had trouble getting DECwrite to
    accept the edited versions! This might be as a result of field test
    software, or is it?? anyone else have this problem?
    
    Gerry

1173.3Two questions answered here, one to go.GENRAL::CARNEYThu Oct 26 1989 19:585
    I just started running under VMS T5.3 and DECwindows V2.0.  Two of the
    common error messages I am getting are explained here but I need to
    know why I am getting "The picture is too large".  I am trying to input
    scanned C and K(D) images.

1173.4max of 3300 x 2550 pixelsEPIK::J_JOSEPHLiving in the PastureFri Oct 27 1989 15:2115
>    I just started running under VMS T5.3 and DECwindows V2.0.  Two of the
>    common error messages I am getting are explained here but I need to
>    know why I am getting "The picture is too large".  I am trying to input
>    scanned C and K(D) images.

Paint can not edit images larger than 3300 x 2550 pixels.  This is the size
of an 8� x 11 image at 300 DPI.  You should be able to edit scanned pages
without any trouble.  Paint also cannot edit images smaller than 10 x 10 pixels.

Oh, when I say no larger than 3300 x 2550 pixels, I mean that the short side
cannot exceed 2550 pixels and the long side cannot exceed 3300 pixels.  so
2600 x 2600 is too big.

-Jonathan

1173.5re .4: A4-sized images?CRLVMS::HALBERTCRLFri Oct 27 1989 18:0710
>Paint can not edit images larger than 3300 x 2550 pixels.  This is the size
>of an 8� x 11 image at 300 DPI.  You should be able to edit scanned pages
>without any trouble.  Paint also cannot edit images smaller than 10 x 10 pixels.
    
    Uh, how about those folks who use A4-sized paper, which is a little bit
    taller than 11 inches? Are they going to be out of luck when they try
    to edit their scanned images?
    
    --Dan

1173.6Scanning not limited to A size.GENRAL::CARNEYMon Oct 30 1989 16:513
    Sorry, my scanned pages are up to E size.  Any future plans for large
    format compatibility.