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Performing Edge Detection using a Webcam using Image Acquistion and Computer Vision Toolboxes
A VideoDevice object never runs out of data to return since it can always capture another frame. Because of this, there is no is...

約13年前 | 0

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How can I zoom into preview window while updating
You can change the ROI by setting the ROIPosition property. The IMAQTool GUI will allow you to do this interactively.

約13年前 | 0

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Image Acquisition Camera - High Speed - Fast Capture
Your question is a little vague, but I think that this <http://www.mathworks.com/help/imaq/examples/acquiring-a-single-image-in-...

13年以上前 | 0

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Image Acquisition - preview is fast, snapshot is slow?
I think that this example might help with your issue: http://www.mathworks.com/help/imaq/examples/acquiring-a-single-image-in-a-...

13年以上前 | 1

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Renaming a field in a structure array
MATLAB has a <http://www.mathworks.com/help/techdoc/ref/setfield.html setfield> and a <http://www.mathworks.com/help/techdoc/ref...

13年以上前

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Function Iterator
Given a handle fh to a function which takes a scalar input and returns a scalar output and an integer n >= 1, return a handle f...

13年以上前

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Camera access problem in matlab
Image Acquisition Toolbox does not support these cameras and I can't find any indication that PPT Vision provides MATLAB support...

13年以上前 | 0

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imaqtool + firewire camera (dcam driver) = strange artefact (see picture)
It looks like the Scout camera returns multi-byte data in little-endian format. This is somewhat common but the DCAM specificat...

13年以上前 | 2

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Recently I use image acquistion toolbox, the image captured is very gloomy
You're trying to display an image in the YCbCr color space (that's what the I420 in your videoinput line means) with a function ...

13年以上前 | 0

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Accessing two identical Logitech Cameras simultaneously ... Matlab freezes (for a while)
I've seen similar issues in the past which were caused by the camera drivers. Probably the simplest thing to do is configure th...

13年以上前 | 1

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imaqregister won't register third party Image Acquisition Toolbox adaptors
You do not need to call IMAQREGISTER on adaptors that the toolbox provides by default. In R2011b, the toolbox shipped with su...

13年以上前 | 1

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Make a Palindrome Number
Some numbers like 323 are palindromes. Other numbers like 124 are not. But look what happens when we add that number to a revers...

13年以上前

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Summing Digits within Text
Given a string with text and digits, add all the numbers together. Examples: Input str = '4 and 20 blackbirds baked in a...

13年以上前

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Trimming Spaces
Given a string, remove all leading and trailing spaces (where space is defined as ASCII 32). Input a = ' singular value deco...

13年以上前

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De-dupe
Remove all the redundant elements in a vector, but keep the first occurrence of each value in its original location. So if a =...

14年弱前

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Pascal's Triangle
Given an integer n >= 0, generate the length n+1 row vector representing the n-th row of <http://en.wikipedia.org/wiki/Pascals_t...

14年弱前

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Return the largest number that is adjacent to a zero
This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

14年弱前

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Replace NaNs with the number that appears to its left in the row.
Replace NaNs with the number that appears to its left in the row. If there are more than one consecutive NaNs, they should all ...

約14年前

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Counting Money
Add the numbers given in the cell array of strings. The strings represent amounts of money using this notation: $99,999.99. E...

約14年前

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Balanced number
Given a positive integer find whether it is a balanced number. For a balanced number the sum of first half of digits is equal to...

約14年前

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Making change
Given an amount of currency, return a vector of this form: [100 50 20 10 5 2 1 0.5 0.25 0.1 0.05 0.01] Example: Input a = ...

約14年前

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Nearest Numbers
Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

約14年前

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The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

約14年前

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Duplicates
Write a function that accepts a cell array of strings and returns another cell array of strings *with only the duplicates* retai...

約14年前

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Image Acquisition Toolbox: using the 'memory' part of 'disk&memory' logging to just record timestamps
You can't do what you want directly, i.e. there is no mode that says just log the time stamps. I would probably use the FramesA...

約14年前 | 0

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Elapsed Time
Given two date strings d1 and d2 of the form yyyy/mm/dd HH:MM:SS (assume hours HH is in 24 hour mode), determine how much time, ...

約14年前

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Remove all the consonants
Remove all the consonants in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill'; Output s2 is 'a ...

約14年前

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Find the longest sequence of 1's in a binary sequence.
Given a string such as s = '011110010000000100010111' find the length of the longest string of consecutive 1's. In this examp...

約14年前

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Bullseye Matrix
Given n (always odd), return output a that has concentric rings of the numbers 1 through (n+1)/2 around the center point. Exampl...

約14年前

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Pangrams!
A pangram, or holoalphabetic sentence, is a sentence using every letter of the alphabet at least once. Example: Input s ...

約14年前