wiki:v2:teach_pixy_an_object_2
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wiki:v2:teach_pixy_an_object_2 [2018/05/22 23:48] pixycam [Teach Pixy2 an Object] |
wiki:v2:teach_pixy_an_object_2 [2018/05/23 22:24] (current) pixycam |
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| 2. The brighter the LED, the better the lock. Move the object a little and see if you can maximize the LED brightness. | 2. The brighter the LED, the better the lock. Move the object a little and see if you can maximize the LED brightness. | ||
| 3. Look at the region-growing grid in the PixyMon window and see how the size of the grid corresponds to the LED color and brightness. A grid that covers more of your object is better than a grid that covers only some of your object and results in a brighter LED. The picture below shows a grid that covers most of the object (good).\\ | 3. Look at the region-growing grid in the PixyMon window and see how the size of the grid corresponds to the LED color and brightness. A grid that covers more of your object is better than a grid that covers only some of your object and results in a brighter LED. The picture below shows a grid that covers most of the object (good).\\ | ||
| - | {{wiki:img:7db5032b3268d3d135423b3db4c4daf741bb0e91.png?400}} | + | {{wiki:v2:image_211.png}} |
| Learning when Pixy2 has a decent lock by looking at the LED might take a little practice, but once you get the feel of it, you can teach Pixy2 new objects reliably **without needing to use PixyMon**! | Learning when Pixy2 has a decent lock by looking at the LED might take a little practice, but once you get the feel of it, you can teach Pixy2 new objects reliably **without needing to use PixyMon**! | ||
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| After you teach Pixy2 a signature, it saves the signature in flash, so when you power cycle your Pixy2, it will remember the signatures you taught it and continue to track objects that match these signatures. | After you teach Pixy2 a signature, it saves the signature in flash, so when you power cycle your Pixy2, it will remember the signatures you taught it and continue to track objects that match these signatures. | ||
| - | If you accidentally find yourself teaching signature 2 when you meant to teach signature 1 (i.e. you released the button when it was orange instead of red), for example, just hold down the button until the LED turns off. This is how you tell Pixy2 to cancel teach mode. You can then start over by holding the button down again. | + | If you accidentally find yourself teaching signature 2 when you meant to teach signature 1 (i.e. you released the button when it was orange instead of red) just hold down the button until the LED turns off. This is how you tell Pixy2 to cancel teach mode. You can then start over by holding the button down again. |
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| Now hold the object you want to teach in front of Pixy2 and select **Action➜Set signature 1** from the pulldown menu. | Now hold the object you want to teach in front of Pixy2 and select **Action➜Set signature 1** from the pulldown menu. | ||
| - | {{wiki:img:9741abb6ffca0398ca19b8787d768391cad30e4f.jpg?400}} | + | {{wiki:v2:image_216.png}} |
| Using the mouse, click and drag to select the region you want Pixy2 to use to learn the object. | Using the mouse, click and drag to select the region you want Pixy2 to use to learn the object. | ||
| - | {{wiki:img:bd4d93961009ff69dc6e2c3694c03030f4d936fc.jpg?400}} | + | {{wiki:v2:image_212.png}} |
| - | That's it! After you select the region, Pixy2 will "learn" the object and automatically go into "cooked" video mode so you can verify how well your color signature is working. | + | That's it! After you select the region, Pixy2 will "learn" the object and automatically and start tracking it. |
| - | {{wiki:img:7ac22cd97d695677accc67aa254a703bf5337d90.jpg?400}} | + | {{wiki:v2:image_214.png}} |
| ==== Signature tuning ==== | ==== Signature tuning ==== | ||
| - | Sometimes the color signatures you teach Pixy2 need to be "tweaked" -- that is, you are getting some false positives (Pixy2 is detecting objects that aren't the objects that you intended) or false negatives (Pixy2 isn't detecting the object you just taught it, or it's detecting the object intermittently.) You can tweak things by bringing up the Configure dialog (click on the gear icon or select **File➜Configure**). Select the **Signature Tuning** pane under **Pixy2 Parameters**. | + | Sometimes the color signatures you teach Pixy2 need to be "tweaked" -- that is, you are getting some false positives (Pixy2 is detecting objects that aren't the objects that you intended) or false negatives (Pixy2 isn't detecting the object you just taught it, or it's detecting the object intermittently.) You can tweak things by bringing up the Configure dialog (click on the gear icon or select **File➜Configure**). Select the **Tuning** pane under **Pixy2 Parameters**. |
| - | {{wiki:img:5da46fa93bdaa8eaf21ecf2c7e420168ae2c3fb2.jpg?400|Signature Tuning pane}} | + | {{wiki:v2:image_226.png|Tuning pane}} |
| Use the slider for **Signature 1 range** to adjust the inclusiveness of signature 1 (assuming it's signature 1 you're wanting to adjust). Slide it to the left if you want to be less inclusive (i.e. if you're seeing false positives, like the picture below): | Use the slider for **Signature 1 range** to adjust the inclusiveness of signature 1 (assuming it's signature 1 you're wanting to adjust). Slide it to the left if you want to be less inclusive (i.e. if you're seeing false positives, like the picture below): | ||
| - | {{wiki:img:117233991728b5aa18b48dc39c9a0a74ff42d55f.jpg?400}} | + | {{wiki:v2:image_219.png}} |
| or slide it to the right if you want to be more inclusive (i.e. you're seeing false negatives) or the detection is intermittent or sparse (like in the picture below): | or slide it to the right if you want to be more inclusive (i.e. you're seeing false negatives) or the detection is intermittent or sparse (like in the picture below): | ||
| - | {{wiki:img:96f668332d6d1f87a375a66f9096881faf767d79.jpg?400}} | + | {{wiki:v2:image_222.png}} |
| Choose a slider value that provides good strong detection, like the picture below: | Choose a slider value that provides good strong detection, like the picture below: | ||
| - | {{wiki:img:2de53156e5b89711f854a6329c2c5f569952f7cb.jpg?400}} | + | {{wiki:v2:image_223.png}} |
| You can adjust all seven color signatures this way to maximize detection accuracy for all signatures. Be sure to press **Apply** or **OK** to save the slider ranges! The adjusted values won't be saved if you press **Cancel** or dismiss the dialog. | You can adjust all seven color signatures this way to maximize detection accuracy for all signatures. Be sure to press **Apply** or **OK** to save the slider ranges! The adjusted values won't be saved if you press **Cancel** or dismiss the dialog. | ||
wiki/v2/teach_pixy_an_object_2.1527032888.txt.gz · Last modified: 2018/05/22 23:48 by pixycam
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