Am Mon, Mar 01, 2021 at 03:54:12PM + schrieb Wols Lists:
> >> So basically, how do I save an image as "one bit per pixel" like you'd
> >> think you'd send to a B&W printer?
> >
> > $ convert input.jpg -threshold 50% output.png
> >
> > should do it, you may need to play with the threshold set
On Mon, Mar 1, 2021 at 10:54 AM Wols Lists wrote:
>
> And the png does make a massive difference - the same command with jpg
> output is 1.7MB - so why is my scanner chucking out 800KB jpegs if I set
> it correctly?
jpeg quality is adjustable. You can output a jpeg file of almost any size.
Soft
On 01/03/21 13:48, Neil Bothwick wrote:
> On Mon, 1 Mar 2021 11:50:35 +, Wols Lists wrote:
>
>> I've got a bunch of scans, let's assume they're text documents. And
>> they're rather big ... I want to email them.
>>
>> How on earth do I convert them to TRUE b&w documents? At the moment they
>>
On Mon, Mar 1, 2021 at 8:48 AM Neil Bothwick wrote:
>
> should do it, you may need to play with the threshold setting. The file
> command reports the output file as being "1-bit grayscale".
>
> You can also use -monochrome but that will produce a dithered image,
> that's probably not what you want
On Mon, 1 Mar 2021 11:50:35 +, Wols Lists wrote:
> I've got a bunch of scans, let's assume they're text documents. And
> they're rather big ... I want to email them.
>
> How on earth do I convert them to TRUE b&w documents? At the moment they
> are jpegs that weigh in at 3MB, and I guess they
On March 1, 2021 12:50:35 PM GMT+01:00, Wols Lists
wrote:
>I've got a bunch of scans, let's assume they're text documents. And
>they're rather big ... I want to email them.
>
>How on earth do I convert them to TRUE b&w documents? At the moment they
>are jpegs that weigh in at 3MB, and I guess the
I've got a bunch of scans, let's assume they're text documents. And
they're rather big ... I want to email them.
How on earth do I convert them to TRUE b&w documents? At the moment they
are jpegs that weigh in at 3MB, and I guess they're using about 5 bytes
to store all the colour, luminance, what
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