Adding Scale Bar To Microscopic Images In Photoshop Cs, Customizing Measurement.

how can i use photoshop to make a tooth colour analysis?
here you can see a print out from a device that does that...but i want to achieve that with ps.

-i take a picture of my patient with a gray card and ringlight to set the correct white balance.
http://dentopolis.org/temp/001.jpg
-i also have a picture of a objective colors also taken with gray card so the white balance of those two pictures should be the same.
http://dentopolis.org/temp/kolornik.jpg

now:
1)how can i tell what is the major/main/single colour of the tooth like he
http://dentopolis.org/temp/002.jpg

2)how can i tell what are three colours of the tooth like here (same as above but three segments):
http://dentopolis.org/temp/003.jpg

3)how can i achieve such posterized color map? http://www.mht.ch/images/micro_shademap.jpg
http://dentopolis.org/temp/004.jpg

thank you in advance for help

I have image scale 667 x 1000 px.
But I need scale 250 x 330 px.
I use Image size , not choose Constrain Proportions but image looks strange.
Can anyone help me how to scale it ?

Thank you

I'm new to Photoshop and I'm trying to figure out how to best use Photoshop's Quick Selection tool.
I've watched some videos and I'm not having the kind of success I see in the videos.
Sometimes it selects to much sometimes not enough, sometimes totally unpredictable results.
Thanks

I have a series of images taken at different dates, some many years apart, and want to get them as correctly aligned as possible. The images were taken from slightly different positions and with somewhat different focal length lenses. The result would be two images of the same scene from the different dates but corrected for various distortions. Obviously it will not be possible to correct for all distortions and positional effects but a lot could be done. I am assuming there will be a tool where you can click on a range of points in each image and tell the program its the same thing in each picture and the program will automatically transform one or both of the images so that they are more similar to each other. I have found plenty of warping and morphing tools in photoshop but not one that will do this.

I am trying to figure out what magnification my camera lens is shooting at, so I took a silver oxide battery and measured it with my digital calipers. It read out at 7.76 millimeters. I then took a picture of the battery with my lens at close focus and used a macro focusing rail to make minor adjustments to the focus and opened up the image in Photoshop CS6. I set the units to millimeters and used the ruler tool to measure the battery in the image. It said the battery was 660 millimeters. I am sure I did something wrong in the PS settings. I have included the image here. Would somebody please measure the battery in the image and tell me if I did something wrong? Thank you in advance for any help you can give me!

Hi to all
I'm sorry for my not so great title, but I just don't eally know how to call what I want to do...
In general, I want to create a picture that if I were to duplicate it and put it on top of the original, it will "connect" and look like a continuation of the original picture.
This is an example of what I wanna do:

I can't use the same method I've used here to create what I want, 'cause I wanna do it on a more complex picture. Like this:

If such an ability can't be achived then maybe is there a way, that if I'm drawing using the brush tool but there is not enough space for the whole brush to be drawn, it will not be drawn?
That is a background for a video game that I am working on and it is very important to me. So if anyone in here know how I can draw things without them being sliced by the borders on the canvas please help me.
Thanks in advance,
Liav

Hi there,
I have looked for an answer to this problem but have not been able to find it - so I wanted to ask if anyone here know.

What I want to do is to tranform (scale etc.) a part of a Photoshop image I am working on. I need to work very close (zoomed in) so I can not see the transform handles that I normally use to drag when tranforming.

Is there any way to do transformations using the mouse (with a dragging motion) - without actually grabbing the transformation handles? (eg. using shortcuts / mouse)

Lars Bjorstrup

Hi, what's better when trying to make a selection in Photoshop, Magic Wand or Quick Select.
MrTom gave me some help with Quick Select but I was wondering what the difference was.
Does one do a better job at somethings than the other?
Thanks

I'm going through a tutorial where we're using a technique that employs the use of the basic gradient tool to cover parts of a layer mask. From what I can tell, the instructor in the video is using a default black to white gradient. The problem I'm having is that he keep using the gradient tool to build up the area with several applications and angles. When I try to do that, my gradient application is 'replaced' by any following uses, instead of adding to it. Obviously I could just manually paint over the one gradient application with a big soft brush, but I wanted to know why mine replaces instead of adds. I've searched settings, but nothing sticks out. Any ideas?

I want to work with this image, but I'm having trouble deciding which tool is the best to pull the subject matter from the background so that I can work with it more freely. Typically I use the pen tool. I put down about 756,982,012,117 anchor points and then I can pull the image out. It seems like there must be a better way. Although I like how well the pen tool does things as compared to magic wand, lasso, quick select, I have a feeling that perhaps there's an easier yet just as reliable way to do this. Render I think is the word some people use?
The picture is located he https://www.photoshopgurus.com/forum...ice-photo.html