On 11/02/2012, at 7:46 AM, Chris Paveglio wrote:
> for (column = 0; column {
> //get pixel value from grey and put into 1bit
> [imgRep getPixel:&lePixel atX:row y:column];
> [newRep setPixel:&lePixel atX:row y:column];
> }
> //FYI this is not an all purpose solution, this will ONLY work with gre
els; row++)
for (column = 0; column
To: Chris Paveglio
Cc: Cocoa Dev List
Sent: Thursday, February 9, 2012 5:43 PM
Subject: Re: drawing 1 bit images, and image resolution
On 10/02/2012, at 3:54 AM, Chris Paveglio wrote:
still looking for a way to convert to 1-bit.
So what have you tried?
The
I have been able to change the library to output Greyscale images now. It
required less work than I had thought.
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Let's work on this today and see what we get. I've got meetings for the next 3
hours, but am free to try and help after that.
Feel free to email me in 3 hours.
Cool?
- Alex Zavatone
On Feb 10, 2012, at 11:15 AM, Chris Paveglio wrote:
> What I'm working with is a library that makes a QR code.
st int rawDataSize = widthInPixels * heightInPixels;
unsigned char *rawData = (unsigned char*)malloc(rawDataSize);
NSUInteger lePixel;
for (row = 0; row < heightInPixels; row++)
for (column = 0; column
To: Chris Paveglio
Cc: Cocoa Dev List
Sent: Thursday, February 9, 2012 5:43 PM
Subject: Re: d
On 10/02/2012, at 3:54 AM, Chris Paveglio wrote:
> still looking for a way to convert to 1-bit.
So what have you tried?
There are a lot of different methods for deciding how to threshold an image -
in other words how to decide which colours end up as 1s and which as 0s. You
will probably fin
ot;z...@mac.com"
To: Chris Paveglio ; Cocoa Dev List
Cc:
Sent: Wednesday, February 8, 2012 12:53 PM
Subject: Re: drawing 1 bit images, and image resolution
I know this is somewhat lame, but could you use sips from a shell call to
convert your saved image to a tiff and delete the original?
2012
07:26:24
To: Cocoa Dev List
Reply-to: Chris Paveglio
Subject: drawing 1 bit images, and image resolution
I need to save an NSImage as a TIFF file, as a 1-bit (black and white) image,
and at a specific resolution (dpi). I have my NSImage being created in RGB
mode, and I can save it (as RGB
I need to save an NSImage as a TIFF file, as a 1-bit (black and white) image,
and at a specific resolution (dpi). I have my NSImage being created in RGB
mode, and I can save it (as RGB).
I've been trying to read the other posts on 1-bit images, but I don't
understand things like "you'll have to
When retrieving an image from the iPad's rear camera, I remember there being an
API that would allow you to select from a number of resolutions, ranging from
thumbnail up to native. Where would I find this information? I'm trying to find
out, among other things, if the iPad can return a 640x480
On Oct 18, 2010, at 04:37, Amy Heavey wrote:
> The source images are not generated by us, they are from a variety of surces,
> and are generally 200pixels + on each side, however sometimes they are 72
> dpi, and sometimes they are 300dpi. Even if an aimage is 450pixels square,
> when it is set
Hi,
I've got an app that generates composite images, so it places images
onto a single canvas and saves that as a new image. It's working fine,
but I'm struggling with the resolutions/representations issue.
The source images are not generated by us, they are from a variety of
surces, and
Le 5 août 08 à 19:48, Frederick Bartram a écrit :
I am having difficulty understanding the issues involved in image
drawing speed.
I have a large, ~10K x 10K image in a scrolling view. The image is
loaded as a PNG file into an NSImageView from a nib. I am getting
large differences in the
I am having difficulty understanding the issues involved in image
drawing speed.
I have a large, ~10K x 10K image in a scrolling view. The image is
loaded as a PNG file into an NSImageView from a nib. I am getting
large differences in the image drawing speed that I do not understand.
The
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