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Color Codes

Pixy Software
#1

Please help me better understand Color Codes. I have reviewed this [[http://cmucam.org/projects/cmucam5/wiki/Using_Color_Codes]]

Does this statement mean that Pixy can detect and track 7 different objects in total?

As you know, Pixy has seven color signatures that it can learn/remember. Each signature can either be a normal signature or a color code signature.>

Do the 7 signatures between regular objects and CC objects relate somehow? In other words, if I follow the Wiki instructions and create a 3 color CC object, did I just use up 3 color codes and/or one regular signature? And if I were to create another 3 color CC object, how would it be numbered or identified? I assume the first one would be 123(octal) so the second one would be 456(octal)?

Thanks,
Paul

#2

Hey Paul,

Pixy can theoretically detect and track hundreds of objects. It is limited to 7 different color signatures, but it can track multiple objects of each color. So, you could have 20 orange ping-pong balls, and it would detect them all (as well as whatever other colors you’ve taught it, simultaneously).

That said, 7 is the limit for all signatures - if you teach 3 colors for a CC, you will “use up” three of the seven available signatures. However, depending on detection mode, those colors are still available for non-CC detection, i.e. if Pixy is set to mode 3, it will report multi-color CC codes, and individual CC colors as normal objects, and normal color signature objects. See this section: http://cmucam.org/projects/cmucam5/wiki/Using_Color_Codes#Color-code-modes

Finally - CC signature IDs are dependent on the colors present. If you teach Pixy CC signature 1 = red, CC 2 = blue, CC 3 = orange, CC 4 = green, and you have an object with red-blue-orange, it will be tagged 123. If your other object has some of the same colors, say red-green-orange, it will be tagged 143. Note that blue-orange-red will be tagged 132, instead of 231 - PixyMon will show the CC in the smallest numerical order.

Make sense?

Cheers,
Jesse

#3

Yes, many thanks! So if I wanted to track two separate CC objects(Red/Green) AND the other(Blue/Orange) I would define or set CC object #1,#2,#3,#4 as Red,Green,Blue,Orange respectively. And I have used 4 of the 7 signatures. Now for my source code I would look for a tag of o12 for the first object and a tag of o34 for the second object. I assume that if an object appeared containing all 4 colors then I would get a tag of o1234 which I could choose to ignore.

And to fine tune my CC objects I would adjust the sliders for signatures #1,#2,#3 & #4 individually.

Does this all sound correct?

BTW: Love this product!

Paul

#4

Yes, that all sounds correct! Jump in and see what happens - it’s easy to play with this stuff in PixyMon.

Thanks, and good luck! Let us know how you make out.

Cheers,
J