Upgrade to Pro — share decks privately, control downloads, hide ads and more …

20181130.pdf

Sponsored · Your Podcast. Everywhere. Effortlessly. Share. Educate. Inspire. Entertain. You do you. We'll handle the rest.
Avatar for sug1t0m0 sug1t0m0
December 20, 2018

 20181130.pdf

Avatar for sug1t0m0

sug1t0m0

December 20, 2018
Tweet

More Decks by sug1t0m0

Other Decks in Technology

Transcript

  1. Python OpenCVͷجૅ ըૉ΁ͷΞΫηε (άάΔͱ͙͢ʹग़ͯ͘Δ΍ͭ) • ըૉ͝ͱʹ৭Λऔಘ͢Δ blue = img[10, 20,

    0] green = img[10, 20, 1] red = img[10, 20, 2] pixelValue = img[Y࠲ඪ, X࠲ඪ, νϟϯωϧ] • ըૉͷॻ͖׵͑ img[10, 20, 0] = 255 img[10, 20, 1] = 255 img[10, 20, 2] = 255 img[10, 20] = [255, 255, 255] or
  2. Python OpenCVͷجૅ ըૉ΁ͷΞΫηε (NumpyΛ࢖͏ͱ) • img_1ͷըૉ(x,y)͕50Ҏ্ͷͱ͖ img_2ͷըૉ(x,y)ͷ஋Λ52ʹ͍ͨ͠ for y in

    range(height): for x in range(weight): if img_1[y, x, 0] >= 50 : img_2[y, x, 0] = 52 ɹɹɹɹɹɹɹɹɹɹɹɹɹͱ΍ͬͯ͠·͏ • Ͱ΋numpyΛ࢖͏ͱɺɺɺ cond = img_1 >= 50 img_2[cond] = 52 ɹɹɹɹɹɹɹɹɹɹͰɺ͍͚Δʂ
  3. ͬ͘͟Γ(͔ͳΓద౰ʹ)଎౓ൺֱ for y in range(height): for x in range(weight): if

    img_1[y, x, 0] >= 50 : img_2[y, x, 0] = 52 • time : 0.779437780380249[sec] cond = img_1 >= 50 img_2[cond] = 52 • time : 0.004307746887207031[sec] • Pythonͷfor͸஗͍ • ΠϯλϓϦλͷΦʔόʔϔουʁ • ੩తͳܕఆٛΛ࣋ͨͳ͍͔Βʁ