Changing perspective of image in PS

Michael J. wrote:

Are there any plugins or functions in PS (CS2) that will allow you to change the perspective of an image, or object in an image? more complex objects such as cars and the like?

Perhaps something like ImageAlign
(http://www.dphoto.us/news/node/view/312) only maybe a bit more powerful. For example, say I got a shot of a car at around a 30 degree angle from the side, and want it to look like the shot was taken more directly from the side. I think traditionally this has been tediously done by making a selection of the object and then using the free transform function to play around with it long enough to get a reasonably good looking final image.
As both a PS and Lightwave 3D user, I can tell you that for Lightwave there is a plugin which will allow you to import a picture, draw a bunch of lines to match that picture, and then slowly start building a 3D model based on that picture.

Although this would be much less complex in PS (as it need not be 3D), I figure there has to be something like it for PS which will allow substantial perspective changes of an image. Any advice or info much appreciated.

Really changing the perspective means that you are seeing something now that wasn’t visible in the original photo. No plugin can do that. You can change the apparent perspective somewhat with Photoshop CS2 ‘Lens Correction’ filter however.

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Johan W. Elzenga johan<<at>>johanfoto.nl Editor / Photographer http://www.johanfoto.nl

On Fri, 9 Jun 2006 14:33:41 +0200, (Johan W. Elzenga) wrote:

Really changing the perspective means that you are seeing something now that wasn’t visible in the original photo. No plugin can do that. You can change the apparent perspective somewhat with Photoshop CS2 ‘Lens Correction’ filter however.

True. I realize that, as is true with any image operation, you cannot add pixels to an image that don’t already exist (this probably sucks most for those who have a need to enlarge images… oh how they wait for an AI algorithm that will correct this problem). However, putting it simply, I only want to be able to take parts of the image that are there and make them "not there."

For example, lets say we take a picture of a car looking at the side (the driver’s side), but at about at about a 30 degree angle to the front as well. We will not only see the entire side of the car, we will see a portion of the windshield and frontal car geometry as well.

If we "rotate" the car clockwise (looking down from the top) the back end of the car would grow on the Y axis (up/down) and the frontal geometry of the car would begin to shrink on the X axis (left/right) until ultimately it would almost disappear. Now the back end has grow, the front has disappeared, the overall image has stretched slightly and we should be looking at what appears to be the side of the car dead on.

You know, I had completely forgotten about the 3D Transform filter. That’s what happens when you work with the nitty gritty so much.

Michael J. wrote:

On Fri, 9 Jun 2006 14:33:41 +0200, wrote:

Really changing the perspective means that you are seeing something now that wasn’t visible in the original photo. No plugin can do that. You can change the apparent perspective somewhat with Photoshop CS2 ‘Lens Correction’ filter however.

True. I realize that, as is true with any image operation, you cannot add pixels to an image that don’t already exist (this probably sucks most for those who have a need to enlarge images… oh how they wait for an AI algorithm that will correct this problem). However, putting it simply, I only want to be able to take parts of the image that are there and make them "not there."

For example, lets say we take a picture of a car looking at the side (the driver’s side), but at about at about a 30 degree angle to the front as well. We will not only see the entire side of the car, we will see a portion of the windshield and frontal car geometry as well.
If we "rotate" the car clockwise (looking down from the top) the back end of the car would grow on the Y axis (up/down) and the frontal geometry of the car would begin to shrink on the X axis (left/right) until ultimately it would almost disappear. Now the back end has grow, the front has disappeared, the overall image has stretched slightly and we should be looking at what appears to be the side of the car dead on.

Or easier: Image you START by looking at the side of the car dead on. Now you change the perspective, so you would be looking at the car under an angle. That means you now would see the front or the back of the car, but those details weren’t in the original photograph.

You know, I had completely forgotten about the 3D Transform filter. That’s what happens when you work with the nitty gritty so much.

I don’t think that filter does anything you want it to do. It’s a filter to draw basic 3D objects, not to change the perspective of an image.

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Johan W. Elzenga johan<<at>>johanfoto.nl Editor / Photographer http://www.johanfoto.nl

On Fri, 9 Jun 2006 23:13:01 +0200, (Johan W. Elzenga) wrote:

Or easier: Image you START by looking at the side of the car dead on. Now you change the perspective, so you would be looking at the car under an angle. That means you now would see the front or the back of the car, but those details weren’t in the original photograph.

Johan, I’m not sure if you’re saying that a person should have started by photographing a zero degree, perpendicular side of the car in the first place. If that’s what you mean then I would have no need to do this changing of perspective, I’d just re-shoot the car (maybe I’m wrong in the interpretation of what you’ve said). What I have here are some stock photos that I want to alter just slightly. This can always be done to some degree with free transform functions… I just wondered if there was perhaps a plugin that might simplify this task.

You know, I had completely forgotten about the 3D Transform filter. That’s what happens when you work with the nitty gritty so much.

I don’t think that filter does anything you want it to do. It’s a filter to draw basic 3D objects, not to change the perspective of an image.

Not only that, it doesn’t seem to appear in the CS2 version. If I remember right, it always was kinda a weird, somewhat temperamental filter anyway.

Michael J. wrote:

I don’t think that filter does anything you want it to do. It’s a filter to draw basic 3D objects, not to change the perspective of an image.

Not only that, it doesn’t seem to appear in the CS2 version. If I remember right, it always was kinda a weird, somewhat temperamental filter anyway.

It’s still there in the extras, but you have to install it yourself. It’s not installed during the basic installation of CS2.

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Johan W. Elzenga johan<<at>>johanfoto.nl Editor / Photographer http://www.johanfoto.nl