Questions tagged [photo-realistic]

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15 votes
3 answers
2k views

Non Real Time Raytracing

I've played with real time raytracing (and raymarching etc) quite a bit, but haven't spent that much time on non real time raytracing - for higher quality images or for pre-rendering videos and the ...
Alan Wolfe's user avatar
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13 votes
4 answers
511 views

What physical properties are “lacking” to keep this 3D scene from looking like a real photograph?

So I know that I'm basically asking to identify the main problem to be solved in creating realistic 3d Graphics, but as someone without much technical experience in the field, I'm curious that if ...
galois's user avatar
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12 votes
1 answer
410 views

Which effects do I need to take into account for the iris of the eye?

The iris (the colourful ring surrounding the pupil of the eye) is covered in a layer of water, and appears to have opaque elements embedded in transparent and translucent elements. What effects do I ...
trichoplax is on Codidact now's user avatar
12 votes
3 answers
719 views

How can I make my ice cubes look real?

I can model ice cubes as slightly misshapen transparent cubes with the refractive index of water, but they don't look convincing. They look like lumps of glass rather than ice. Looking at real ice ...
trichoplax is on Codidact now's user avatar
10 votes
2 answers
1k views

How is spectral rendering handled?

Is all spectral rendering handled as simulation? Are there technique more tailored to 'consumer' rendering, such as for real-time or even just 'realistic looking without solving full physical ...
New Alexandria's user avatar
7 votes
1 answer
626 views

What is the basis of rendering light caustics?

I am not looking for textbooks and related how-tos, though I'm sure they can color the answer. I'd like to understand how we handle the rendering of caustic effects — and particularly time-saving ...
New Alexandria's user avatar
7 votes
1 answer
201 views

What is the state-of-the-art on using computers to "clean-up" images?

TWO PART QUESTION - We've all seen the movies/TV shows where the police/feds/spies use computer software to take a grainy photo and do a "clean-up" to see a better picture and more details. I assume ...
O.M.Y.'s user avatar
  • 171
6 votes
1 answer
766 views

The reciprocity of BRDF

Many books describe that a BRDF has the following property (reciprocity): $$f_r(x, \Theta \to \Psi ) = f_r(x, \Psi \to \Theta)$$ Why is the above equation correct? I think the above equation ...
shashack's user avatar
  • 523
6 votes
1 answer
394 views

Radiative Transfer Equation for Photorealistic Rendering

I've recently become interested in photorealistic rendering, and I've been looking at the different rendering philosophies. I read this Disney Research bachelor's thesis, which states both the ...
BJParks's user avatar
  • 63
5 votes
0 answers
140 views

What is the potential equation in PBR?

I'am studying PBR and the book introduce the potential equation. They said the potential equation can describe shooting algorithms better, and $W(x, \theta)$ describes the fraction of the radiance $L(...
shashack's user avatar
  • 523
4 votes
1 answer
293 views

Tasks of a professional graphics programmer?

Currently I'm 16 and in high school and I love graphics programming and I'm seriously considering it as a career path. I was wondering what a day as a graphics programmer looks like for offline ...
Arjan Singh's user avatar
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2 votes
1 answer
179 views

How is Aperture and Pixel Size accounted for in calculating received power using ray tracing?

NOTE: Deleting the question to rephrase it after continuing to read other responses and toy around with it: I've written a path tracer and am now working on implementing a physically accurate way of ...
Chris Gnam's user avatar
1 vote
0 answers
49 views

How many years till photorealistic games? [closed]

I just saw this post by NVIDIA: RTX Global Illumination The images shown seem to be rendered in realtime which got me thinking about when games will achieve full photorealism and become ...
spatial's user avatar
  • 111
1 vote
0 answers
36 views

Image contribution function and reconstruction using filters

So I've been reading Physicall Based Rendering which in section 16.4.3 defines the "image contribution function" to be the following $$I_j = \int_\Omega h_j(X)L(X)d\Omega$$ where the variables are ...
Jake's user avatar
  • 205
0 votes
1 answer
69 views

Wireframe mesh effect on a photograph subject [closed]

What is the following wireframe, mesh topography style called and how can this effect be applied to a figure in a photograph as done in the image?
user610620's user avatar
0 votes
2 answers
96 views

What exactly is it about reality that is so difficult to recreate in a 3D simulation?

I have to admit that, while watching footage of the enhanced 2020 version of the 2018 game Forza Horizon 4, when they are driving fast, I have to sometimes remind myself that I am watching a video ...
Nassen's user avatar
  • 1
0 votes
0 answers
18 views

CCD Sensor parallel implementation of Smear

I have rendered an image with 32bit float color channels and want to simulate the smear effect of a CCD sensor (see figure 1). Figure 1: Image of a light source. Here the full-well capacities of the ...
Thomas's user avatar
  • 1,245
0 votes
0 answers
68 views

What is it that really prevents photo-realistic, real-time, digital 3D simulations?

Ever since I was a small child, seeing the amazing 3D visuals that developed in the 1980s and 1990s, I was certain that photo-realism was "just around the corner". In the year 2020, I certainly ...
Riston's user avatar
  • 1
-1 votes
1 answer
99 views

What stops the auto-generated 3D worlds of Google Earth Pro from being MUCH more detailed and accurate?

I'll admit it blew my mind when I first realized that you could actually enter a "first-person mode" in Google Earth Pro, and not just view the 3D maps from a floating camera in the air. But ...
C. Mollner's user avatar