< > BotCompany Repo | #301 // Average brightness, B channel (feature extractor)

Lua code - Image recognition

w, h = img.width, img.height

local sum = 0
for y=0, h-1 do
  for x=0, w-1 do
    local i = img.getInt(x, y)
    local b = bit32.band(i, 255)
    sum = sum + b
  end
end

return "average brightness (B channel): "..(sum/(255*w*h))

Author comment

a very simple feature extractor for images (average brightness of blue channel)

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Image recognition results

Image recognition results