selecting only "in Focus" part of an image

S
Posted By
Stephan
Oct 21, 2004
Views
408
Replies
9
Status
Closed
Hi all,

Just toying with an idea.
Does anyone have a technique to select only sharp parts of an image that would not involve any lasso, pen tool or similar ways of "hand picking"of course.

Stephan

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C
Corey
Oct 21, 2004
To select anything using Photoshop, some sort of selection tool MUST be used. (well, I guess you could "select" various tools, etc. without one!) Youcan avoid "hand picking" by "mouse picking." ;-D

The idea sounds cool though. Some sort of tool that would select discriminately by level or degree of focus. We could call it the f-stop tool or something.

Peadge 🙂

"Stephan" wrote in message
Hi all,

Just toying with an idea.
Does anyone have a technique to select only sharp parts of an image that would not involve any lasso, pen tool or similar ways of "hand picking"of course.

Stephan
H
Hecate
Oct 22, 2004
On Thu, 21 Oct 2004 22:56:28 GMT, Stephan wrote:

Hi all,

Just toying with an idea.
Does anyone have a technique to select only sharp parts of an image that would not involve any lasso, pen tool or similar ways of "hand picking"of course.
The only thing that even approaches that that I can think of would be find edges…



Hecate – The Real One

veni, vidi, reliqui
S
Stephan
Oct 22, 2004
Hecate wrote:
On Thu, 21 Oct 2004 22:56:28 GMT, Stephan wrote:

Hi all,

Just toying with an idea.
Does anyone have a technique to select only sharp parts of an image that would not involve any lasso, pen tool or similar ways of "hand picking"of course.

The only thing that even approaches that that I can think of would be find edges…
Yes I thought of High Pass and others but can’t get far enough
S
Stephan
Oct 22, 2004
Peadge wrote:
To select anything using Photoshop, some sort of selection tool MUST be used. (well, I guess you could "select" various tools, etc. without one!) Youcan avoid "hand picking" by "mouse picking." ;-D

No way, no mouse here! Stylus picking maybe.

The idea sounds cool though. Some sort of tool that would select discriminately by level or degree of focus. We could call it the f-stop tool or something.

The idea would be to combine macro photography done with different focus setting in order to get a very large depth. Would be kind of cool and I am sure there is a way… there is always a way with Photoshop!

Stephan
N
nooo-spammm-pleaseeetox
Oct 22, 2004
On Thu, 21 Oct 2004 22:56:28 GMT, Stephan wrote:

Hi all,

Just toying with an idea.
Does anyone have a technique to select only sharp parts of an image that would not involve any lasso, pen tool or similar ways of "hand picking"of course.

Stephan

Do a search for CombineZ it is just what you are looking for!

Tony
MR
Mike Russell
Oct 22, 2004
Stephan wrote:
Peadge wrote:
To select anything using Photoshop, some sort of selection tool MUST be used. (well, I guess you could "select" various tools, etc. without one!) Youcan avoid "hand picking" by "mouse picking." ;-D

No way, no mouse here! Stylus picking maybe.

The idea sounds cool though. Some sort of tool that would select discriminately by level or degree of focus. We could call it the f-stop tool or something.

The idea would be to combine macro photography done with different focus setting in order to get a very large depth. Would be kind of cool and I am sure there is a way… there is always a way with Photoshop!

Make each of your images a layer, with the background layer being the one focussed furthest away. Subtract each layer from a blurred copy of itself, and use that result as a layer mask for that layer. Use levels to tune each mask to select the sharpest areas from each layer.

You will probably also have to resize each layer slightly, depending on the geometry of your lens.


Mike Russell
www.curvemeister.com
www.geigy.2y.net
R
RSD99
Oct 22, 2004
See
http://www.crystalcanyons.com/Pages/TechNotes/3DMicroMacro.s htm

"Stephan" wrote in message
Hi all,

Just toying with an idea.
Does anyone have a technique to select only sharp parts of an image that would not involve any lasso, pen tool or similar ways of "hand picking"of course.

Stephan
S
Stephan
Oct 22, 2004
RSD99 wrote:
See
http://www.crystalcanyons.com/Pages/TechNotes/3DMicroMacro.s htm

Right on! Thank you

Stephan
H
Hecate
Oct 23, 2004
On Fri, 22 Oct 2004 17:00:35 GMT, "RSD99"
wrote:

See
http://www.crystalcanyons.com/Pages/TechNotes/3DMicroMacro.s htm
Really useful and interesting link. Thanks. 🙂



Hecate – The Real One

veni, vidi, reliqui

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