Image processing is any form of signal processing for which the input is an image, such as a photograph or video frame; the output of image processing may be either an image or a set of characteristics or parameters related to the image.
Questions tagged [imageprocessing]
105 questions
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PID algorithm implementation using computer vision
I am constructing an automatic labyrinth maze solver, and using a webcam to control my maze.
Based on suggestions in other forums, I am trying to control maze's ball movement at least in one direction at the moment. So, I am trying to control my…
Sai
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Using an inertial measurement unit to compute global motion optical flow of video
I have a camera rigidly mounted together with an IMU that consists of 2-dof gyroscopes and 3-dof accelerometers. My aim is to compute the global optical flow of the image captured by the camera, in order to do global motion compensation when…
Ang Zhi Ping
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M.S. Math to Engineering Ph.D : Mathematics in Electrical Engineering
I have two Bachelor's degrees. One is electrical engineering and the other one is mathematics. I am studying mathematics (partial differential equations) in the graduate school (Master course) now. But I want to study electrical engineering later…
Kim
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Interfacing with MIPI CSI-2 camera sensors like the Omnivision OV2732?
CSI-2 is used in pretty much every smartphone however I'm struggling to find much information on how most companies receive and control CSI-2 sensors. I understand there are NDAs. This is not for a hobbyist project, however I'm a beginner on this…
BenAdamson
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Amorphous Silica Electrical Impedance Tomography
I would like to see if the idea I have for an experiment is even worth the effort and money to perform. I would like to use electrical impedance tomography to image a developed thin layer chromatography plate with a silica gel stationary phase. The…
Dallon Penney
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convolution vs correlation?
Apparently this question looks better for DSP SE but I am posting it here to get answer in simple words for those EE graduates who didn't studied signal processing in undergrad.
Apparently as far as math expression is concerned, both are somehow…
LECS
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Good FPGA / Microcontroller development board for real time image processing
I have been working with OpenCV on Desktop environment for the past one year and now I want to shift to dedicated hardware for my real time image processing applications. I have the following questions:
Which development boards…
rotating_image
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X-ray back-projection for conversion to hard-field magnetic induction tomography?
This is a question about hard-field back-projection as used in x-ray tomography, but applied to magnetic induction tomography (MIT). Al-Zeibak and Saunders (A feasibility study of in vivo electromagnetic imaging, 1993) have shown that an x-ray…
Brendan Darrer
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Is FPGA the right way to go for recognizing cards from a desk?
I'm building a playing card dealing machine and I would like to get some advice in regards how I should do with my image processing.
The card will be scanned and depending on the suit and rank of the card it will be place in 1 out of 4 slots.
The…
StefanE
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Development Board / Micro-controller with an onboard camera or external addon
I wanted to use a micro-controller with a camera module to be able to do some processing on the captured images. The Arduino was my choice, but since it has only 256K of Flash memory, it clearly is not a good candidate, I scoured Google to find…
user3458
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Why does increasing sampling density in the frequency domain separate overlapping artifacts in the spatial domain?
I have employed the fourier(projection) slice theorem in matlab. I have a 3D image, P(x,y,z) defines their pixel intensities at a given location int he image volume, it is discrete and uniform. I take the FFT of this image and get a 3D volume in the…
user1084113
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Open a picture and read its Pixel Values
I want to calculate the Histogram of an Image is grayscale color mode
I have designed a memory and a Calculator of Histogram value, now I want to get Pixel values and put them in Calculator as Input
I have a picture (for example a Bitmap), I should…
Mahmoud_Mehri
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Scanning/photocopying vs. photographing the material
Why do scanners and photocopies scan the material?
Couldn't they just have a digital camera + light behind the glass?
A lens with fixed focus would suffice, since the sheet of paper would always be at the same distance.
There would be no moving…
Quora Feans
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Whether phase congruency and phase coherence terms are same or different?
I am studying the importance of phase in signal.Can anybody explain what is phase congruency ?
Also,I am confused between terms i.e. phase congruency and phase coherence. Whether phase congruency and phase coherence are one and the same or different
pandu
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What is Subsampling in image processing?
I was going through some image processing document. And I came cross this term "sub sampling". What does it mean? Is it sampling again already sampled data .. ?
tollin jose
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