So, I was working on a script to get Yolo starting only if an object is presented at the correct distance (1.0meter) using a Ultrasonic sensor.

This works nice.

Now is there a filter I could use to eliminate the background before Yolo analyses the picture?

@moz4r, I solved the neopixel issue by adding an extra sleep(4) at the beginning of my script.

def darknet(): 
  imagedisplay.closeAll()
  sleep(4)
  if isNeopixelActivated==1:
        i01.setNeopixelAnimation("Color Wipe", 25, 5, 10, 15)
  if isOpenCvActivated==1: 
    if i01.RobotIsOpenCvCapturing():
      i01.setHeadVelocity(-1,-1,-1,-1,-1,-1)
      i01.moveHead(75,90,90,30,0,90)
      sleep(1)
      takeFotoForYolo()
      statisticResult()
      sleep(0.1)
      analyseResult()
    else:
      i01.opencv.capture()
      sleep(1)
      i01.setHeadVelocity(-1,-1,-1,-1,-1,-1)
      i01.moveHead(75,90,90,30,0,90)
      sleep(1)
      takeFotoForYolo()
      statisticResult()
      sleep(0.1)
      analyseResult()

#######################################################

# -- coding: utf-8 --

def YoloOnUSonic():
  i01.setHeadVelocity(-1,-1,-1,-1,-1,-1)
  if ultraSonicSensorActivated:
    distance=200
    timeout=0
    timeoutGetCloser=0
    while (not distance or distance > 100):
      timeout+=1
      timeoutGetCloser+=1
      distance=i01.getUltrasonicSensorDistance()
      print distance
      if timeout > 20:
        chatBot.getResponse("SYSTEM_NO_OBJECT")
        sleep(1)
        break
      # ask to move object CLOSER
      if timeoutGetCloser>6:
        chatBot.getResponse("SYSTEM_GET_OBJECT_CLOSER")
        timeoutGetCloser=0
        sleep(1)
      sleep(0.5)
      # Nice an object is detected
    if distance<=100:
      chatBot.getResponse("SYSTEM_SEE_OBJECT")
      sleep(1)
  else:
    sleep(1)
    No()
    i01.mouth.speakBlocking("I think my Ultrasonic is not activated")

 

##############################################

In the _inmoovGestures.AIML:

<category><pattern># THIS IS</pattern>
<template>Let me see.
        <oob><mrl><service>python</service><method>exec</method><param>YoloOnUSonic()</param></mrl></oob></template>
</category>
<category><pattern>SYSTEM_NO_OBJECT</pattern>
<template><random>
          <li>Object or the person is too far</li>
          <li>Object should be within 2 meter range</li>
        </random></template>
</category>
<category><pattern>SYSTEM_GET_OBJECT_CLOSER</pattern>
<template><random>
          <li>Get closer, show the object</li>
          <li>Present the object closer</li>
          <li>Show the object closer</li>
        </random></template>
</category>
<category><pattern>SYSTEM_SEE_OBJECT</pattern>
<template><random>
          <li>Be patient I need to process</li>
          <li>This takes a few seconds to process</li>
          <li>My processor is slow, be patient</li>
        </random><oob><mrl><service>python</service><method>exec</method><param>darknet()</param></mrl></oob></template>
</category>