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How to make a 3d model from an object in a photograph?

You can use Photoshop's Vanishing Point filter for this. It's easiest to use a 3D-capable version of Photoshop,¹ which I presume you have, since you haven't mentioned any other 3D software. There is ...
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13 votes
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focal length and sensor width of a phone

The Redmi 6A uses the Sony Exmor IMX486 sensor, which is a 1/2.9" format sensor. Note that "1/2.9 inch" is merely a name, not its diagonal dimension (see: Why is a 1" sensor ...
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12 votes
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Is it possible to determine from only a photo of a cityscape whether it was taken close with wide angle or from a distance with zoom?

You can often use techniques from piloting. You can find alignments in the picture, for instance the corner of a building that masks off the 2nd vertical line of windows of the building in the back. ...
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8 votes

Is it possible to determine from only a photo of a cityscape whether it was taken close with wide angle or from a distance with zoom?

I am not knowledgeable on the math and programming needed for this, but I can provide you with some insights into information needed for something such. What you want to look into, is perspective ...
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5 votes

What should I consider when buying a camera and lens to take photos of surfaces for 3D textures?

Any interchangeable lens camera will do. Invest in: Lighting (for things that are physically textured, side vs head-on lighting makes a world of difference). You want to be as flexible as possible ...
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5 votes
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What is the difference between a 3D camera and a stereo camera?

are 3d cameras same as stereo camera's? Stereo cameras are a type of 3D camera. There are other types of 3D cameras. my understanding of stereo camera is that, there will be two lenses, where one ...
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5 votes
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Convert regular panoramic photo into google cardboard file

OK, after a LOT of googling I finally have an answer: First of all, I downloaded the facebook template for 360 degree photos, and added the (equirectangular!) spherical photo onto it, and 'saved as' ...
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5 votes
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I'm a sculptor & need a 3d photosphere of a human head for reference, is that possible?

I believe that what you want is to create a 3D model from a series of photographs of your subjects head. The process of doing this is technically a form of photogrammetry This can be done reasonably ...
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4 votes
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What distance should there be between two shots for a stereogram?

It depends on the effect you want. If you want a natural view, the separation between the images should be about 6.5 cm/2.5 inches, equal to the distance between the average person's eyes. However, ...
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4 votes
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Is it possible to calculate the distance to an object using two pictures taken a few cm apart?

Is it possible to calculate the distance of an object to the camera with two pictures which are taken a few cm apart? It depends. You'd need to know something more than just having the two photos. ...
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4 votes

Is it possible to determine from only a photo of a cityscape whether it was taken close with wide angle or from a distance with zoom?

The short answer is yes. It's done everyday. The subject of Photogrammetry involves answers to your question. Photogrammetry is measurement from images. Photogrammetry is useful for topographic ...
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3 votes

How is this weird background / foreground angle shift achieved?

The effect is called wiggle stereoscopy or wiggle 3D. The image produced is wiggle stereogram. It is produced by taking the two images of the same subject/scene, from a slightly different viewpoint (...
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3 votes

Old 3d Portrait (circa 1945)

Stereo still photography was popular near the turn of the last century. Two images were taken; one mimics a right eye view and the other a left eye view. The difference in these two views is call “...
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3 votes

How do I take a stereoscopic photo to view with Google Cardboard without buying two DSLRs?

how would you represent an image with a 60° span without just leaving most of it black? You can't do it without leaving most of it black. With a 60ºx60º image, you've only covered 1/18th of the ...
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3 votes

How to make a 3d model from an object in a photograph?

If you are doing much of this sort of work I would seriously suggest investing the time to learn Blender 3D - it will not cost you more than time and the sweat on your brow as it is completely free, (...
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3 votes

What should I consider when buying a camera and lens to take photos of surfaces for 3D textures?

One of the main purposes of lightboxes is to minimize texture by placing dispersed light from almost every angle on the subject. If you want to show textures, you need to use more directional ...
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3 votes
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What's the name of this style of looping photos?

According to Know Your Meme: Wigglegrams (also known as stereographs) are animated images that simulate 3D effect by looping two or three frames of an object shot from the vantage points of the ...
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3 votes

What's the name of this style of looping photos?

With just two images (stereoscopy), it's called Wiggle Stereoscopy (stereo meaning two). For the general case (two or more), the general term is just Wiggle 3-D From that wiki page: Wiggle ...
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3 votes
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Tools to take 3D pictures for a virtual show

If it doesn't have to be a smooth continuous transition from one view to the next, and if you can write HTML and JS, you can do all the work in the web page. Calibrate the turntable with degree ...
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3 votes

I'm a sculptor & need a 3d photosphere of a human head for reference, is that possible?

I think you're looking for a "bullet time camera array" also called a "timeslice camera array". It allows you to take a picture of a person or object from many angles at the same ...
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2 votes

What distance should there be between two shots for a stereogram?

If you want the scenes to look natural: the distance should be the same as between your eyes - about 8cm. This is independent of the subject distance. If you use a larger separation, you're ...
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2 votes

What is exactly the '3D pop' in photography?

As Matt's answer says, this is something typically associated with Zeiss lenses that gets argued about on fredmiranda's alt-gear forum a lot. The theory goes that lenses that exhibit a high degree of "...
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  • 49k
2 votes

Software to change perspective of image of a whiteboard (or some other plane) to look 2D

There are transformations that you can apply to achieve some of what you're after, but there's not enough information in the source photo to come up with the final photo. For example, look at the ...
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  • 31.2k
2 votes

Is it possible to digitally capture a full 3D point of view?

Yes you can. The technique you use depends on 2 things. If you need a high resolution option or you want a realtime one. For the high resolution option you can take a series of shoots rotating the ...
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  • 20.7k
2 votes

Is it possible to use a single image sensor to capture a stereoscopic image?

There are numerous products available which do this exact thing. They are adapters which often fit over an existing lens to produce 2 images on the sensor. A quick search on 3d lens will give you ...
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2 votes

How to make a 360' panorama taking screenshots of a 3D enviroment

To create a panoramic image, all the parts must be shot from the same place, so they can be stitched together. Your snapshots are from different places, and because of that they can't be used to make ...
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  • 123
2 votes

When do straight lines become curved when talking about projection?

When do straight lines become curved when talking about projection? When you decide what type of projection you wish to use. A rectilinear projection will preserve straight lines (but not correct ...
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  • 167k
2 votes

Is it possible to determine from only a photo of a cityscape whether it was taken close with wide angle or from a distance with zoom?

If the picture has very little perspective, resembling an isometric drawing, it was taken from extremely far away with a telescopic lens. EG: You see two 3-storey buildings, one in front of the other. ...
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  • 129
2 votes

Is it possible to determine from only a photo of a cityscape whether it was taken close with wide angle or from a distance with zoom?

If you have the lat/lon/alt locations of features that can be associated with x/y pixel locations on the image, it can be done. I did it myself. For a hypothetical camera position/orientation/focal ...
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