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Signal Processing

Questions tagged [computer-graphics]

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13 questions
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0 answers
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Paper 'Wavelet Rasterization' show how calculate coefficient for Haar wavelet and give formula for some function. But I want know how set up integral for any path 2D vector function 2D P(x(t); y(t)). ...
Châu's user avatar
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1 vote
0 answers
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For 3 phase shifted sine waves using the projected pattern: I = sin(x + δi) where δ ∈ [-2pi/3, 0, +2pi/3] which is then projected onto a scene. The resulting image is captured with a camera. I am ...
Arun's user avatar
  • 111
5 votes
2 answers
119 views

Given an image that contains an NxM grid of icons with text below them, somewhat like this: I'm wondering how to split it up into the individual icons with text. Some wrinkles: The image won't ...
bjnord's user avatar
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5 votes
6 answers
2k views

I am very confused as I had a debate with my buddy regarding color (RGB) images. He insisted that color images are two-dimensional, but when I personally try myself to read a color image into MATLAB, ...
DSP_CS's user avatar
  • 1,992
1 vote
1 answer
287 views

Suppose, I've a 3d world point $P$ and I want to project it onto the image plane of camera, I can do it as follows $$M = \begin{bmatrix} R & t \\ 0 & 1 \\ \end{bmatrix}$$ $$p = K \cdot M \cdot ...
Nagabhushan S N's user avatar
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1 vote
0 answers
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Please suggest some datasets (can be synthetic, like rendered in blender or so) which have video frames (30fps preferred) with accurate ground truth depth maps and pose (rotation and translation for ...
Nagabhushan S N's user avatar
  • 447
0 votes
1 answer
68 views

I'm trying to get into academic research at the intersection of vision and graphics, and was wondering how researchers in the field went about this: Was it useful to do a lot of fundamental math ...
Train Heartnet's user avatar
  • 119
-1 votes
1 answer
55 views

We know that , generally greater the ppi, the greater the spatial resolution of an image and hence quality But why do the size of icons keeps on decreasing as we change display settings of our ...
DSP_CS's user avatar
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1 vote
0 answers
30 views

I am a software developer, so please forgive my limited knowledge in the DSP space. I am given a task to plot an ECG graph and the data I receive from an ECG (BLE) device is provided in a matrix of ...
Al-Punk's user avatar
  • 111
0 votes
2 answers
241 views

I have simple audio files of single plucked notes from a guitar: I want to graph the amplitude of each partials over time, rather than just have this color-coded "dB" intensity graphing I have here. ...
mike's user avatar
  • 553
1 vote
0 answers
47 views

Is it possible to reproduce the following pencil-like image by pure image processing? Notes: The original image: Fig 10 in paper http://www.cs.columbia.edu/cg/aircode/aircode-uist-2017-li-et-al.pdf ...
WDC's user avatar
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1 vote
1 answer
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I am studying rotation using 3 translations as described in this scientific paper. According to the authors , it is possible to decompose a rotation into 3 shear translations which will be implemented ...
ChiPlusPlus's user avatar
  • 245
2 votes
1 answer
295 views

I have lines (or segments really) I want to draw into a new image I. Let's define the intensity of the pixel at row = r and <...
user3731622's user avatar
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