On Wednesday, June 4, 2003, at 01:53 PM, Rodrigo Peres wrote:
I'm using getPixel to compare 2 images and return the
differences between
them. After I run a list of points and check if some points are
diferent
from the bgcolor (white). The problem: The image is scanned so
there's a lot
of dust
BTW, if you don't have James' book I highly recommend it. Plenty of
nice imaging lingo stuff. Kerry's and Gretchen's reviews at Amazon say
it all.
http://www.amazon.com/exec/obidos/tg/detail/-/0072132655/104-9270019-
9338345?vi=glance
Joe
On Thursday, Jun 5, 2003, at 12:01 US/Eastern,
Hi list,
I'm using getPixel to compare 2 images and return the differences between
them. After I run a list of points and check if some points are diferent
from the bgcolor (white). The problem: The image is scanned so there's a lot
of dust confusing the getPixel(). There's a way to compare if
On Wednesday, Jun 4, 2003, at 08:53 America/Chicago, Rodrigo Peres
wrote:
There's a way to compare if colors are
greater than or darker than???
Try using color objects and palette index conversions:
oColor = color(#rgb, 255,255,255)
oColor2 = color(#rgb, 0,0,0)
put oColor.paletteIndex
Howdy-Tzi wrote:
On Wednesday, Jun 4, 2003, at 08:53 America/Chicago, Rodrigo Peres
wrote:
There's a way to compare if colors are
greater than or darker than???
Try using color objects and palette index conversions:
oColor = color(#rgb, 255,255,255)
oColor2 = color(#rgb, 0,0,0)
There's a way to compare if colors are
greater than or darker than???
Try using color objects and palette index conversions:
oColor = color(#rgb, 255,255,255)
oColor2 = color(#rgb, 0,0,0)
put oColor.paletteIndex oColor2.paletteIndex
-- 0
put oColor.paletteIndex oColor2.paletteIndex
-- 1
Here's a possibly good way to do it (I say possibly, because I didn't
test it, but it feels like it ought to work). If you're using 8.5 or
later, you could do this:
c1 = rgb(100,100,100)
c2 = rgb(123,100,100)
v1 = vector(c1.red,c1.green,c1.blue)
v2 = vector(c2.red,c2.green,c2.blue)
put
On Wednesday, Jun 4, 2003, at 12:10 America/Chicago, Cole Tierney wrote:
There's a way to compare if colors are
greater than or darker than???
Try using color objects and palette index conversions:
oColor = color(#rgb, 255,255,255)
oColor2 = color(#rgb, 0,0,0)
put oColor.paletteIndex
oColor = color(#rgb, 0,0,0)
put oColor.hexstring()
-- #00
oColor2 = color(#rgb, 255,255,255)
put oColor2.hexString()
-- #FF
put oColor.hexString() oColor2.hexString()
-- 0
put oColor.hexString() oColor2.hexString()
-- 1
Don't know if you would want to work this way. A color of
Colin Holgate wrote:
Here's a possibly good way to do it (I say possibly, because I didn't
test it, but it feels like it ought to work). If you're using 8.5 or
later, you could do this:
c1 = rgb(100,100,100)
c2 = rgb(123,100,100)
v1 = vector(c1.red,c1.green,c1.blue)
v2 =
Here's a possibly good way to do it (I say possibly, because I
didn't test it, but it feels like it ought to work). If you're using
8.5 or later, you could do this:
c1 = rgb(100,100,100)
c2 = rgb(123,100,100)
v1 = vector(c1.red,c1.green,c1.blue)
v2 = vector(c2.red,c2.green,c2.blue)
put
Nice. This seems to make the most conceptual sense, since the rgb
color model is described in terms of 3d space. Performance might be
a problem, though.
You could do your own Pythagoras out of the rgb values, and cut out
the vector conversion. Not sure if that would be faster than the
build
On Wednesday, Jun 4, 2003, at 13:36 America/Chicago, Colin Holgate
wrote:
Don't know if you would want to work this way. A color of
rgb(0,255,255), full brightness cyan, may seem to be closer to black
than rgb(1,0,0), almost completely black, would be.
Sigh.
It's jut not my day it seems.
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