6.21.3 Can you answer these questions?

6.21.3.1 Faster alternative to ImageCorrespondingPoints?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=229962

I'm trying to use  ImageCorrespondingPoints  to register frames in a video sequence. Computational speed is an important consideration for the application I am ... 
[image-processing] [computer-vision]
 

asked by Brady Hunt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9017 2 votes

6.21.3.2 How to make this expression?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=230052

How to code this expression in WolframAlpha. I am interested in how to code the second sum, because it contains a boolean expression: 
$$\sum_{i=1}^{100}{\sum_{j>n}}{x_{i}x_{j}}$$ 
[wolfram-alpha-queries]
 

asked by Andrey Stebenkov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=74632 1 vote

6.21.3.3 Information/Information`InformationValueForm using Full- or InputForm

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=229989

I have a problem with the build-in  Information  function for user-defined symbols with custom StandardForm in Mathematica 12.1.1.0: 
For example with the function ... 
[output-formatting] [message-coding] [usage-messages] [information-function]
 

asked by N0va https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=42436 2 votes