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DPChallenge Forums >> Tips, Tricks, and Q&A >> Post Processing Lesson - Selection Techniques
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Showing posts 1 - 25 of 42, descending (reverse)
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08/01/2005 07:24:55 PM · #1
Originally posted by jrtodd:

Steve,

Here it is, my attempt. Lot of new cool tools. The think the dog is over-cooked a bit. Hard a hard time getting a handle on the Lighting Effects tools.
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Great job.

Dog is resized and placed very well, but you still need to work on contrast matching... Might try either brightness/contrast or (my favorite) selective color to match the contrast a little better.
07/31/2005 08:09:09 PM · #2
Steve,

Here it is, my attempt. Lot of new cool tools. The think the dog is over-cooked a bit. Hard a hard time getting a handle on the Lighting Effects tools.
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07/26/2005 06:42:21 PM · #3
Have not finished anything else, but did finally get done with pictures I took last Saturday:
Red Mountain, Arizona USA

Now I want to post process pictures I took on Sunday morning of the aftermath of a wildfire! :)
07/26/2005 06:37:25 PM · #4
Originally posted by dacrazyrn:

That circle thing is like a pivot point for roatation, etc. Right in the center. Drage it somewhere else and then get the Image/Rotate thing going and you will understand.

Thanks Tracy... helping each other out is what focus groups are all about!
07/26/2005 06:35:28 PM · #5
Originally posted by mikala:

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Thanks Tracy for the 'circle thing' answer :)

Steve et.al.,

Above is my first assignment. I have to admit, I get a little impatient selecting sometimes, I hope as my skills improve it won't be quite so tedious.

Off to put the dog in the show! Thanks again for taking the time to do this. I'm learning so much.

Just understand that this is an easy selection! More sophisticated ones require more work. Selection is almost an artform but it is well worth the effort.
07/26/2005 06:33:00 PM · #6
Originally posted by mikala:

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YAY! wow, was this fun! double thanks steve for taking the time to do this, your hours of work is sure to save millions of hours collectively for your flock as we improve :)

when you have time, any thoughts on my assignments appreciated.

edit: BTW, to change the size of a free transform on my PS6.0.1 you hold down SHIFT while resizing, not CTRL. also, i have filter->render->lighting effects on this version, maybe the little (free) software update from 6 to 6.0.1 added it?

Michelle... great feedback about PS 6... my version doesn't got much in it at all.

Your contrast match with the dog to the landscape is really good. Kudos to you for a great job!
07/26/2005 06:30:20 PM · #7
Originally posted by bear_music:

I'd like to pop in to say I've just read this tutorial thread and I think Davidson is doing one HELL of a job!

(end interruption)

Robt.

Awwwww... shucks, Robert... you make me blush.

Hope you are having a great time with that new camera of yours! :)
07/26/2005 04:48:59 PM · #8
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YAY! wow, was this fun! double thanks steve for taking the time to do this, your hours of work is sure to save millions of hours collectively for your flock as we improve :)

when you have time, any thoughts on my assignments appreciated.

edit: BTW, to change the size of a free transform on my PS6.0.1 you hold down SHIFT while resizing, not CTRL. also, i have filter->render->lighting effects on this version, maybe the little (free) software update from 6 to 6.0.1 added it?

Message edited by author 2005-07-26 16:51:12.
07/26/2005 04:38:37 PM · #9
I'd like to pop in to say I've just read this tutorial thread and I think Davidson is doing one HELL of a job!

(end interruption)

Robt.
07/26/2005 04:14:18 PM · #10
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Thanks Tracy for the 'circle thing' answer :)

Steve et.al.,

Above is my first assignment. I have to admit, I get a little impatient selecting sometimes, I hope as my skills improve it won't be quite so tedious.

Off to put the dog in the show! Thanks again for taking the time to do this. I'm learning so much.
07/26/2005 04:07:33 PM · #11
That circle thing is like a pivot point for roatation, etc. Right in the center. Drage it somewhere else and then get the Image/Rotate thing going and you will understand.
07/26/2005 02:27:33 PM · #12
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question:

what's the circle thing in the middle of the selection and what would be it's use? i noticed i can move it around, but i see no use in doing so. thanks, this is great!! still working my way through the tutorial, obviously:)
07/26/2005 01:58:42 PM · #13
Wow! Those are amazing images. THe colors are fantastic.

Just FYI, I'll be out of town from Friday till next Thursday. I expect that packing / unpacking puts me out of commission for more than a week, so if I'm not participating it's not 'cause I'm not enjoying this! I'm learning quite a bit, and the practice assignments are fun. Have a good week.
07/25/2005 10:43:30 AM · #14
Sorry I have not finished my tutorials... I had an opportunity to take pictures in Northern AZ Saturday and also take pictures Sunday of the remnants of an ongoing wildfire and that has kept me busy. I was so busy that some shots I thought would make great entries in the wooden challenge did not get processed before the submission deadline.

Some of the pictures I took Saturday are here:
Red Mountain, Arizona, USA

I will be adding to that gallery. You may be interested to know that many of those pictures use the "painting with color" technique I have mentioned before. :)
07/25/2005 10:36:01 AM · #15
Oly and Bebe,

You guys both did a terrific job capturing and resizing the dog for inclusion in the Monument Valley image.

The thing you need to pay particularly close attention to is matching the inserted image with the scene where it is inserted. If you do not do that it looks artificial.

There are two things you have to keep in mind. One is contrast and the other is lighting angle with an inserted image like the dog. Both are equaly important. Both your images look a little artificial to me.

Again, you did a terrific job with everything else!
07/25/2005 10:29:29 AM · #16
Oly... sorry you don't have "Filters>Render>Lighting Effects" in PS 6. It is really a pretty cool feature. I looked on my old version of PS 6 and I don't even have "Filters>Render" on it. LOL.

Almost all the improvemnets in Photoshop CS are for photographers. Both of us should upgrade. I have a friend with PS CS and it is a terrific upgrade for us photographers.
07/24/2005 08:12:03 AM · #17
Hi. Here's my 2nd assignment (sorry it took so long - I was working on, and giving up on, the wood challenge!)

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I found this assignment very frustrating. I'll probably take the time to try again today, because I feel like with the amount of "fixing" I did, I could have just started with the eraser!

Can I ask what size brushes you used in the extract? I started with sizes 2-4, but that gave me a real mess, so I ended up with just 1 and 2.

Well, I'll practice more & hopefully get a little better!

07/24/2005 04:35:16 AM · #18
Hi Steve, hope you're having a nice weekend. I redid the first exercise making sure I did "paste into," and think I finally got the hang of this exercise using "magic wand" at very low tolerances (about 5). I then proceeded to "extract" the dog and paste into, resize and reposition it in this new image. Only problem is that I couldn't find the "lighting effects" filter to change the lighting of the dog. I looked under filters>render but there's nothing there. Looked for it under all menus but seems to be non-existent in my version (6.0). Went to the help section and they list it under the filters menu, but I can't understand where it's at...any ideas?

Anyway, here's my new image with the dog.
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07/22/2005 12:43:10 PM · #19
Originally posted by JayWalk:

OK, I was a little behind in the lesson, but got caught up. please take a look and let me know what you think about my attempt. I took a lot of time erasing the edges on the dog using a very fine brush. Just wondering if there is a better way to clean up an image or if this is it.

Any advice regarding my picture would be much appreciated.
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ps. I really think that these lessons are great and I cannot begin to thank you for taking the time to share your knowledge with us. Hopefully we can all repay you eventually.

Good job selecting, pasting, resizing and positioning the dog.

t looks to me that you still need to adjust the contrast to better match the landscape. The dog is a little too light for the surroundings. You can see the dog shadow is lighter than the other ones. Try working with Filter>Render>Lighting Effects a little more. That tools works well for that type of adjustment. Also, brightness/contrast and or selective color adjustments (with only black) might work well in this situation.

I did touchup work like you did with my selection after it was completed. 'Edit>Extract' is ideal for extracting objects with complex edges, like people and their hair. By its nature it has a tendency to select some things you don't want and drop things you do want. That is why there is a "fixit" part that is always necessary. There is an artform to making an extract selection.

There is another way to work with these things. It does not save you any work, but supports "non-destructive" editing. That is what aboutimage validly suggested and is the best way to do things. In this case you would create a mask on your pasted extract layer and adjust it instead of the extracted image itself.

The big advantage, as with all "non-destructive" editing, is that you can go back later and fix things easier should you discover you made a mistake. "Non-destructive" editing is also very advantageous should you decide to reprocess the image in a vastly different way but retain features you already worked on.

Message edited by author 2005-07-22 13:49:48.
07/22/2005 12:10:23 PM · #20
Originally posted by Olyuzi:

Hi Steve...Ok, came home from work tonight and tackled the exercise. Here's my results:
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A couple of issues for me...first, smoothing. I didn't use it because no matter what setting I used it at, I wasn't able to get rid of one of the beams of the structure in my selection. So I just used magic wand at a very low tolerance until all of the sky was selected and then did the copy & paste of the new sky.

Secondly, when using the free transform tool to resize/reposition the new sky I extended all for sides out to the receiving images dimensions in order to fit it in. In your version, your clouds appear higher in the sky than in mine. Why is that? Did you do your adjustment differently?

Decent first try on your sky replacment exercise. I downloaded and looked closely and you still have a few minor edge effects along the mountains. Not to worry... do this kind of thing very much and you will be battling edge effects pretty much the rest of your life, I think. LOL.

Be advised the second practice assigment has been posted to the lesson. Now you get to add a dog to the image. :)

I think I know what caused your problems. I think you used 'Edit>Paste' instead of 'Edit>Paste Into' to insert the sky into your landscape. They are very different. I added a description of the differences between the two in the new additions to the lesson I put in yesterday. You will want to review that. Using 'Paste Into' is what allowed me to drag and reposition the sky around within the selection. That is main reason for using 'Paste Into' for sky replacments.

If you used a straight 'Edit>Paste' function that might explain your difficulties with smoothing. The use of any tool is individual situation dependent.

Smoothing is a handy tool depending on the selection. If you make a selection and clearly see that you have selected some spots that are clearly not in the sky then smoothing can help before you do a copy. That was the case for me with my selection in this exercise. What it does is examine the pixels on edges of selections for a defined pixel radius. If more that 50% of the pixels match the surroundings then it changes the pixels to match the surroundings, rather they be sky or non-sky. I noticed in this exercise what it did with a 5 pixel was remove the ground selection, but lost a bit of sky selection. So using the magic wand to add that back in worked well.

It is always a good idea to zoom in to about 200% and closely examine you selection boundary and make minor tweaks as needed. When close I use the magic wand and/or the laso tool for fine adjustments.

You might want to try running through that first practice assignment again if you did not use 'Paste Into'
07/21/2005 09:24:00 PM · #21
OK, I was a little behind in the lesson, but got caught up. please take a look and let me know what you think about my attempt. I took a lot of time erasing the edges on the dog using a very fine brush. Just wondering if there is a better way to clean up an image or if this is it.

Any advice regarding my picture would be much appreciated.
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ps. I really think that these lessons are great and I cannot begin to thank you for taking the time to share your knowledge with us. Hopefully we can all repay you eventually.
07/21/2005 03:39:21 AM · #22
Hi Steve...Ok, came home from work tonight and tackled the exercise. Here's my results:
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A couple of issues for me...first, smoothing. I didn't use it because no matter what setting I used it at, I wasn't able to get rid of one of the beams of the structure in my selection. So I just used magic wand at a very low tolerance until all of the sky was selected and then did the copy & paste of the new sky.

Secondly, when using the free transform tool to resize/reposition the new sky I extended all for sides out to the receiving images dimensions in order to fit it in. In your version, your clouds appear higher in the sky than in mine. Why is that? Did you do your adjustment differently?

Anyway, great tutorial! I learned a hellavu lot and am very grateful to be in this mentoring group.
Oly

btw...I was able to figure out what was not right with your rendition, but cheated and looked ahead to Janruss's answer as to how to correct it. It's nearly 4 in the morning here...lol
07/20/2005 01:04:07 PM · #23
Wanted to check in from work and note that everyone is doing really well with the selection homework. This can be a difficult skill to pick up (and we have even more advanced stuff coming), but it's REALLY important to your Photoshop skills to get selection down pat.

Great job, Steve, for your fabulous tutorial, thus far. I wonder if you can get DPC to publish this one - it's really well done, and the example images help a great deal.
07/20/2005 12:58:08 PM · #24
Originally posted by Olyuzi:

Steve, I just finished reading the two parts (posted so far) of this wonderful tutorial and will do the exercises this evening when I get back. I've got most of the concepts down except maybe for smoothing. Will have to work on that one.

The smoothing part reads more difficult than it really is. When you try it out in the assignment you will see how it works.
07/20/2005 12:50:11 PM · #25
Steve, I just finished reading the two parts (posted so far) of this wonderful tutorial and will do the exercises this evening when I get back. I've got most of the concepts down except maybe for smoothing. Will have to work on that one.
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