"jimkramer" <Newsreader1@[EMAIL PROTECTED]
> wrote in message
news:fslfvd$aqk$1@[EMAIL PROTECTED]
> "Mark W." <mark@[EMAIL PROTECTED]
> wrote in message
> news:wmpHj.67$lV1.44@[EMAIL PROTECTED]
>>
>> "jimkramer" <Newsreader1@[EMAIL PROTECTED]
> wrote in message
>> news:fshfv8$9bf$1@[EMAIL PROTECTED]
>>>
>>> "Mark W." <mark@[EMAIL PROTECTED]
> wrote in message
>>> news:NjXGj.2876$EJ2.2308@[EMAIL PROTECTED]
>>>>
>>>> "jimkramer" <Newsreader1@[EMAIL PROTECTED]
> wrote in message
>>>> news:fshde3$vle$1@[EMAIL PROTECTED]
>>>>>
>>>>> "Mark W." <mark@[EMAIL PROTECTED]
> wrote in message
>>>>> news:6IVGj.7601$Yy2.2128@[EMAIL PROTECTED]
>>>>>> "Paul Furman" <paul-@[EMAIL PROTECTED]
> wrote in message
>>>>>> news:%GtGj.24717$Ch6.16324@[EMAIL PROTECTED]
>>>>>>> Mark W. wrote:
>>>>>>>> My dumb OCR software will refuse to OCR an image if it's lower
than
>>>>>>>> a 96 dpi setting in it's properties.
>>>>>>>> It doesn't care that the pixel dimentions are much higher than
some
>>>>>>>> other much smaller pixel dimention
>>>>>>>> file if it's properties say it's dpi is under 96 dpi.
>>>>>>>>
>>>>>>>> So, how can I batch change many image files (usually JPEG's) to a
>>>>>>>> particular dpi property setting?
>>>>>>>>
>>>>>>>> I'm using Omipage Pro 14 to do the OCR.
>>>>>>>
>>>>>>> Irfanview
>>>>>>
>>>>>> Thanks!
>>>>>> Irfanview sounded familiar. Turns out I already had it installed.
It
>>>>>> only
>>>>>> took a few minutes to figure out how to batch reset the DPI's in my
>>>>>> files.
>>>>>> Funny that it always compresses the files to about only 27% of the
>>>>>> original
>>>>>> size.
>>>>>>
>>>>>> I would prefer that it left the file quality alone.
>>>>>>
>>>>>> I'm only resetting the DPI numbers. I experimented with resetting
to
>>>>>> 3
>>>>>> different DPI's: from the original 72 DPI, to 96, 300, and 600. The
>>>>>> resulting new files are all exactly the same NEW size regardless of
>>>>>> which of
>>>>>> those 3 DPI's I reset the files to.
>>>>>>
>>>>>> Am I just unaware that I chose some compression unintentionally?
>>>>>>
>>>>>> Couldn't find anything about compression or image
quality/resolution
>>>>>> in the
>>>>>> help file.
>>>>>>
>>>>>>
>>>>>
>>>>> Under the "options" button (right of the format pull down menu, but
>>>>> before "set advanced options") Unfortunately it is a slider bar
0-100
>>>>> so you have to know what your compression is beforehand...
>>>>>
>>>>> Jim
>>>>>
>>>>
>>>> Couldn't find any slider bar.
>>>> Is it somewhere in the batch conversion dialog box?
>>> Yes, near the bottom; next question is what version are you using? I'm
>>> looking at 3.91.
>>>
>>
>> 4.10 Don't see slider bar or a way to control compression any way at
all.
>> I'm not resizing of course.
>>
> I updated my Irfanview to 4.10 and he has moved some things around.
> It is in the Batch Conversion/Rename menu.
> The Options button, still next to the Output Format pull down menu.
> That should pull up a menu with the slider bar to set the JPEG
> compression.
>
> Jim
>
Thanks so much!
I did a test on a couple of JPEGS with the slider set at 100%. The files
were at 72 DPI and I set the DPI at 300 for the output. The resulting
files
were at the same quality and actually a tiny bit larger (by 2.7%) which is
just fine. Funny, but if I reset the DPI of a TIFF file (the same as the
JPEGS aforementioned), it would double the size of the file.
I'm beginning to see that Irfanview has a lot more control options that
I'm
totally unaware of.
I guess they offer this quite useful free program as a teaser to get a
more
powerful paid version.
|
