Stephen Meschke's practice log

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14th December 2018

Stephen Meschke

routine, 1 minute

Multiplex with balls - stack vertically
Multiplex with rings - stack horizontally
Multiplex with clubs - straight toward my face

Total practice time: 1 minutes

Location: Gym

Comments (0)

11th December 2018

Stephen Meschke

5 balls, 1 minute

Filed to get 30 catches of 88441. Almost, but not quite. This is really frustrating.

Total practice time: 1 minutes

Location: Gym

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5th December 2018

Stephen Meschke

3-7 balls, 5 rings, 90 minutes

Did not feel well. I am sore from a major home improvement project. Ran 7 ball for 201 catches, which feels good.

Pr on 5 rings (29 catches) and 8x6 (11 catches).

vision research, 1 minute

Several people have expressed interest in my tracking software. Feels good. One person used the HSV color picker program to make a cool video about triangles. That's cool. Another person used Tracking_Colorspaces to track 3 ball cascade.

lissajous curve - looks exactly like a long exposure of a cascade pattern

Total practice time: 91 minutes

Locations: Gym, Linux

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20th November 2018

Stephen Meschke

vision research, 1 minute

Decided to go in a different direction with the Juggling Data Set.

I am going to focus on videos that are 848x480 @ 120 fps. I'll convert all the other videos to this aspect.

By focusing on only one type of video, it's easier to present and analyze the data.

Goals:

  • Upload data to Kaggle
  • Make a Pateron Page for the Juggling Data Set
  • Convert videos to one resolution and frame rate

Total practice time: 1 minutes

Location: Linux

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31st October 2018

Stephen Meschke

vision research, 1 minute

https://imgur.com/a/HesBjq8

Total practice time: 1 minutes

Location: Linux

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25th October 2018

Stephen Meschke

7 balls, 3-6 balls, 25 minutes

Just had one of the best training sessions! Maybe 20 drops total. All for 100 catches, except 753 for 60:

5 b Cascade x 3
55514
741
1234567
645
744
753
6 ball asynchronous sync transition
7 ball Cascade (got it on the second try)

Total practice time: 25 minutes

Location: Phoenix Az

Comments (0)

22nd October 2018

Stephen Meschke

7 balls, 1 minute

8040 in columns really makes sense.


8 8
8 8
8 8
8 8
8 4 8
8 4 8
8 4 8
8 8

https://imgur.com/a/DbO2TXi

Total practice time: 1 minutes

Location: Gym

Comments (0)

7th October 2018

Stephen Meschke

7 balls, 1 minute

Training at gym again, ran 7b for 240+ catches.

Total practice time: 1 minutes

Location: Gym

Comments (0)

16th August 2018

Stephen Meschke

vision research, 1 minute

How to find juggling balls: Look Up!

Sky detection is a solved problem in computer vision. Using a convex hull, the sky can easily and quickly be segmented from the rest of an image (seen in light blue). Once the sky is segmented, detecting the balls is a simple matter of finding the contours.

This robust method detects the balls extremely quickly, but does not work at all below the horizon, where the juggler interacts with the props. This method only detects the object, it does not track them.

The camera must be set so that it looks toward a bright sky (i.e. the setting sun is to the jugglers back). In this configuration, the balls are backlit. The video doesn't look great, but it is optimized for detecting the dark juggling balls against the bright sky.

This only works on a clear day, or a day with uniform haze.

Example: http://juggling.tv/16952

https://github.com/smeschke/juggling/blob/master/convexHull_previous_points.py

Total practice time: 1 minutes

Location: Linux

Comments (2)

31st July 2018

Stephen Meschke

5-7 balls, 3-5 Clubs, 65 minutes

Warmup:
5 ball cascade - 100 catches X 3
Siteswaps (100 catches each):
55514
714
1234567
744
753 (only 60 catches)
6 ball stuff
7 ball cascade:
7 ball cascade - 3 runs that are 100+ catches each
If I have time and energy:
97531
9555
multiplex

Total practice time: 65 minutes

Location: park

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