Technically, any result which is not a reversible transformation of
the image can be thought of as "losing information".

-- 
Raul


On Wed, Jun 28, 2017 at 12:29 PM, Don Guinn <dongu...@gmail.com> wrote:
> Are you losing information by applying the threshold to each point without
> regard to the points around it? If most or all the points around it are
> large values then it is more likely that the threshold should be lower than
> if the point is surrounded by lower values. Also, maybe look at the overall
> brightness of the image to help set the threshold.
>
> On Wed, Jun 28, 2017 at 5:46 AM, Brian Schott <schott.br...@gmail.com>
> wrote:
>
>> Linda,
>>
>> I see it and it is a beautiful diamond.
>> Thanks,
>>
>> On Tue, Jun 27, 2017 at 10:02 PM, Linda Alvord <lindaalv...@verizon.net>
>> wrote:
>>
>> >
>> > load 'viewmat'
>> > ]B=:A*.|.A*.|.A=:-.(500+x)</|x=:i:500
>> > ]P=:2 3$255 255 255 255 0 0
>> > P viewmat B
>>
>>
>>
>> > I couldn't resist making  a "beginner's diamond.
>> >
>> > Good luck with the cards. I'm looking forward to seeing wha you make.
>> >
>> > Linda
>> >
>> >
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