---
# System prepended metadata

title: Regular Meeting (2020.6.22)
tags: [Regular Meeting, DeWei]

---

# Regular Meeting (2020.6.22)

## Outline

* Difference between 1/r and log-r in HoughMapGenerator
* Problem

## Difference between 1/r and log-r

1. Formular for HoughCurveConvert
    * log-r
      ![log-r-formular](https://i.imgur.com/b0X34vZ.png)
      Convert CDC-polar to HoughSpace *Indirectly*
      (Through xy-space)
      
    * 1/r
      ![1r-formular](https://i.imgur.com/PloHo1v.png)
      Convert CDC-polar to HoughSpace *Directly*

2. Mechanism for 
    * log-r
        * Minus-Normal
        * Minus-Infinity
        * Plus-Normal
        * Plus-Infinity
    
    * 1/r
        * r > 0

###### tags: `Regular Meeting` `DeWei`