Scan image filter

A
Posted By
AndreLTR
Jan 20, 2009
Views
385
Replies
3
Status
Closed
Hello,

I scan images often and would like to set a threshold that would convert the pixels below the threshold to white (0) automatically in an image. Is this possible? Do I need a filter or need to develop a script?

Thanks,

André Luiz
Related Tags
filter image scan

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J
jaSPAMc
Jan 20, 2009
AndreLTR found these unused words:

Hello,

I scan images often and would like to set a threshold that would convert the pixels below the threshold to white (0) automatically in an image. Is this possible? Do I need a filter or need to develop a script?

Thanks,

André Luiz

Normally pixels -=above=- a ‘threshold’ would be converted to white. White being 255,255,255 and black being 0,0,0,

You didn’t say if you were dealing with B&W, greyscale or ???

Most good scanners have mode in which they will scan, one being similar to PS’s threshold, often called ‘line art’.
A
AndreLTR
Jan 21, 2009
Hello,

Thanks for the reply. From your words I suppose I´ll have to scan again the images, correct, and I would not like this because there are far too many of them. I´d like to do it automatically in Photoshop instead is possible.

Sincerely,

André Luiz

On Jan 20, 2:21 pm, Sir F. A. Rien wrote:
AndreLTR found these unused words:

Hello,

I scan images often and would like to set a threshold that would convert the pixels below the threshold to white (0) automatically in an image.  Is this possible?  Do I need a filter or need to develop a script?

Thanks,

André Luiz

Normally pixels -=above=- a ‘threshold’ would be converted to white. White being 255,255,255 and black being 0,0,0,

You didn’t say if you were dealing with B&W, greyscale or ???
Most good scanners have mode in which they will scan, one being similar to PS’s threshold, often called ‘line art’.
J
jaSPAMc
Jan 21, 2009
Asyou failed to note you -=had scanned=- the images, my answer based on "I scan".

Use Adjustments => Threshold

Play with the setting until satisfied.

DON’T SAVE that image.

Re-open, start script [Action] and record applying the threshold – PS will retain the last setting.

SAVE AS and then STOP

Batch the rest.

AndreLTR found these unused words:

Hello,

Thanks for the reply. From your words I suppose I´ll have to scan again the images, correct, and I would not like this because there are far too many of them. I´d like to do it automatically in Photoshop instead is possible.

Sincerely,

André Luiz

On Jan 20, 2:21 pm, Sir F. A. Rien wrote:
AndreLTR found these unused words:

Hello,

I scan images often and would like to set a threshold that would convert the pixels below the threshold to white (0) automatically in an image.  Is this possible?  Do I need a filter or need to develop a script?

Thanks,

André Luiz

Normally pixels -=above=- a ‘threshold’ would be converted to white. White being 255,255,255 and black being 0,0,0,

You didn’t say if you were dealing with B&W, greyscale or ???
Most good scanners have mode in which they will scan, one being similar to PS’s threshold, often called ‘line art’.

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