Thanks for your reply. I have seen the "instructions" on Google before I
asked my question on the Adobe Forums, but these replies are not very
satisfactory, I am sure that if you take the time yourself to study
them, you will find them shallow and unprofessional. I was expecting to
find a more professional answer from such a highly regarded community as
the Adobe Forums. I am still waiting for a thorough and clear
instruction from someone who has done this kind of thing.
LOL, how many people do you think have actually done 3D sidewalk art, really?
Thinking creatively, I'd probably use Edit - Distort - Perspective to pre-distort the picture you want to portray quite a bit. For example:
To get the angles right, you could take a photo from eye level of the sidewalk you're going to put it on, overlay your image, then use the Edit - Perspective Distortion tool to make the sides of the sidewalk seem parallel.
Just thinkin' outside the box, er, house.
Sorry my answer wasn't to your liking. But sidewalk art doesn't really involve Photoshop (unless you're just trying to fake it on a digital image).
And a couple of the links from google did cover the basics of perspective projection, even if they didn't go into step by step detail.
Me? I'd just use a digital projector at the desired viewing location, project my image and sketch the outlines while it's dark, then finish the color during the day.
I don't know how many people on this forum have done sidewalk art and I
don't know how many people read this forum, but if 1,000 people read it,
there is a small chance that someone has tried. Nothing to lose by
asking. Thanks anyway for your answer. I may try the same question on
the Adobe Illustrator forum. I know how work in Photoshop with the
perspective tool and I understand the basics or rather the principle
upon which this kind of art is based upon, what I don't know is how to
make it correctly accurate.
No problem. Thanks.
I saw a nice video a while back about some apparently world famous chalk artist doing his thing on a peir at Venice Beach, but I can't remember his name, and nor can I Google him. It followed the whole process complete with how he overcame problems. The one thing I remember was that he sets up a camera right at the start which he constantly went back to as a reference. Passers by were queing up to look through the camera as I guess this gave the perfect perspective and angle on his drawing. I'll keep trying to find it as it really was quite informative. He was a Brit btw, and pretty old.
I answered on the Illustrator forum but wil add a bit here you can create a grid for the art as a stadard 2D art then make a grid on the pavement based on your grid but of course as seen from the camera angle.
Figuring out the grid depends on the angle you will be viewing it.
What they do is probably work wih a photo of the site raw then mark off using say the payment stones as a way of remapping the at if it is a street with blacktop perhaps he marks of either physically or mentally where the mapping points are related tothe grid.
It looks like he is the type of person that needs to do this mentally as it might be to confusing for him to do it blindly by the numbers some people do this better with a physical grid or points like poster painters.
Thank you Trevor and thank you Wade for your answers. Indeed the video
of Julius Beever shows some of the steps he goes through, what I am
looking for is a more precise tutorial with more specific instructions,
especially on angles, and amount of perspective distortion. I am still
looking for that, but again thank you both for your efforts.
I kind of think that sort of talent comes from deep inside, and just comes naturally if you have it. But hey... I don't have it so what do I know?
The talent is certainly what distinguishes a work of art from a simple
geometrical drawing, albeit a correctly made drawing. I don't have that
talent for artistic drawing or painting either, but at least I could
learn the technique involved. Perhaps then, one day I can draw a simple
cube on my driveway, and as long as the cube would look realistic, I
would be happy with it.
It seems to me you didn't read past the first sentence in my post. I told you how to set up the perspective.
He read it it but wht the op thinks is that there is a mechanical way of applying this to creating the art. that is they are looking for the percise angle t setthe camera and the percise location you place the camera and the grid should be defined by a specific measurement for each progressive unit. What you gave him was the concept and the how it is done but that requires figuring it out and the OP is saying they do not understand how one would figure it out and the answer is that you have to understand the concept and the OP doesn't really want to…well bother with understanding the concept they just want to hit numbers and keys on a keyboard and there you go as easy as that.
Or probably better than that tae a photo of the place where you would create the art and then have a program map the image to the photo and then printout a outline of the art so you could just stencil or trace it in place. Now if the OP want to do a little thinking then you of course actually gave them a good clue as to how to do exactly that and all they have to do is think about it…except they wants you to do al that work for them.
That's what I did, Wade, with the second image.
Perhaps the one overriding truth is that True Inspiration motivates people to go out and do things.
I always assumed that an amateur approach to this technique would be to use an image projector set up to view at the proper angle/perspective.
After tracing the guidelines from the projected image, it would just be a matter of finishing the artwork within those guidelines - possibly using the projector along the way for reference.
Also - that Justin Beever guy must hate his name now.
I did indeed read it, here is what you wrote: "To get the angles right,
you could take a photo from eye level of the sidewalk you're going to
put it on, overlay your image, then use the Edit - Perspective
Distortion tool to make the sides of the sidewalk seem parallel."
Unfortunately this is too vague for me, I am looking for a step-by-step
tutorial hopefully from someone who has done this kind of thing before.
I am still hopeful that someone, somewhere has what I need.