cams | Generates cam profiles for the mechanical laser show | 3D Printing library
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kandi X-RAY | cams Summary
Generates cam profiles (.stl) for the mechanical laser show. Orignally written in Golang but now ported to JS/HTML (thanks ValkA!).
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QUESTION
I'm trying to create an empty pandas.Dataframe with a Multi-Index that I can later fill columnwise with my data. I've looked at other answers (here and here), but they all work with data that does not fill in columnwise, or that is somehow connected in the different columns.
The information I want to be contained in the Multi-Index looks like this:
...ANSWER
Answered 2021-May-26 at 11:41QUESTION
I want to display images from an Allied Vision camera inside a tkinter frame using OpenCV and the SDK for the camera, VimbaPython.
The only possible way to initialize the camera is with a Python with
statement:
ANSWER
Answered 2021-May-10 at 19:49I tried to read the frames in openCV and display them in tkinter label. I was able to do so using the below code:
QUESTION
My goal is to loop over a JSON response, grab two values, and build out an API call to load information into a POST to create a policy I am building.
To start out on this, I am trying to get two values from a JSON response to assign as variables to build the POST call, which will be the second step to this. As each different "id" and "name" key is assigned, I would like to build out a JSON payload and send the POST calls one at a time. The keys "id" and "name" occurs multiple times in the response payload and I am having issues capturing the two keys.
JSON response
...ANSWER
Answered 2021-Apr-28 at 17:57The JSON response which you have given is already a dictionary so no need to use json.loads
for that. The multiple item list is actually nested under the data
key. So you could just simply iterate through the array of items like this:
QUESTION
i need to build a rtsp server for the webcam using python3. Does anybody created and rtsp python server for web cams? Which libraries you used for rtsp server?
...ANSWER
Answered 2021-Mar-12 at 10:06Can you use any of existing services like iSpy, ZoneMinder or Shinobi?
If you want to stick with python, the OpenCV library can easily handle rtsp stuff. (But you need to explain a bit more, what you need to achieve) Here is a simple OpenCV snippet to view an rtsp stream:
QUESTION
I want to display two or more separate videos with slight image processing applied using cv2.
If I don't use threading/multiprocessing
a lot of time is wasted just displaying frames using cv2.waitKey(timeThatCouldBeSpentFetchingAFrameForAnotherVideo)
.
I tried using threading
, but it does not work for properly. I get this warning: WARNING: nextEventMatchingMask should only be called from the Main Thread! This will throw an exception in the future.
. Which more often than not results in a plain crash.
So, I decided to try to implement multiprocessing
, which in theory should be faster than threading
with more complex image processing (right??). I used this as an example. However, in this case I ran into another issue this method ONLY gets me the first frame of the video. Also, I have tried putting the cv2.VideoCapture() outside of the Process
, but that results in: TypeError: cannot pickle 'cv2.VideoCapture' object
.
Here is my code:
...ANSWER
Answered 2021-Feb-21 at 13:13I got multiprocessing
to work by creating cv2.VideoCapture
object inside my Process
function and prior to the readloop:
QUESTION
Hello i am trying to convert a dictionary into a dataframe, containing results from a search on amazon (I am using an API.). I would like each product to be a row in the dataframe with the keys as column headers. However there is some keys in the beginning, that i am not interested in having in the table.
Below am i converting the JSON into a dictionary, which i would like to convert it into a dataframe.
...ANSWER
Answered 2021-Feb-14 at 17:32From the official docs:
QUESTION
I am trying to make this videocapture opencv2 python script allow me to do multiple video streams from my laptop cam and USB cams and I succeeded (with help of youtube) to do so only every time I add a camera I have to edit the line of code and add another videocapture line and another frame and another cv2.imshow
. But I want to edit the video capture code in a way that allows me to stream as many cameras as detected without the need to add a line every time there is a camera using a loop. I'm obviously new here so accept my apologies if the solution is too simple.
This is the code that allows me to stream multiple cameras but with adding a line for each camera.
...ANSWER
Answered 2021-Jan-30 at 15:30If you want to work with many cameras then first you should keep them on list - and then you can use for
-loop to get all frame. And frames you should also keep on list so later you can use for
-loop to display them. And finally you can use for
-loop to release cameras
QUESTION
I am trying to write a code for detecting the color green from a live video. I want to make a detector so that whenever the color green pops up in the screen, a counter starts counting how many times the color appears.
So for the video source, I am using the OBS Virtual Camera. But I have no idea how to input it as the source. I have seen codes inputting web cams as the source as shown below:
...ANSWER
Answered 2020-Oct-16 at 15:13Windows will treat OBS Virtual Camera as a regular camera. The argument for cv2.VideoCapture
is camera number. So up that number by 1 over and over again until the program uses the OBS Virtual Camera. And there you go.
QUESTION
I am trying to generate isobars using MetPy and ContourPlot. I use pressure data from my own netCDF file. The background heatmap is generated correctly, but for contours, there seems to be a kind of an interpolation error. Does anyone know how to fix the problem of horizontal white lines?
Here is the code which I use for plot generation:
...ANSWER
Answered 2020-Dec-03 at 09:06Looks like I have found a bug within the MetPy code, which appear when plotting the data which cover both sides of the zero meridian: https://github.com/Unidata/MetPy/pull/1595
A temporal solution is to edit the file src/metpy/plots/declarative.py and replace the line:
QUESTION
I'm working on a project in Unity and I need to get the camera of an object using a script, the code I used was this:
...ANSWER
Answered 2020-Nov-17 at 15:10FindWithTag
method receive a string as parameter, and you are passing the String type itself, instead of a variable of string type.
So try with quotes, " String " instead of simply String:
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