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ARIYAMA Keiji
September 28, 2016
Technology
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3.4k
20160928-meganeco
「TensorFlowで趣味の画像収集サーバーを作る9月特大号」
TensorFlowによる認識処理の高速化と新データセットでの訓練・評価検証
ARIYAMA Keiji
September 28, 2016
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Transcript
C-LIS CO., LTD.
5FOTPS'MPXͰ झຯͷը૾ऩूαʔόʔΛ࡞Δ ݄̕ಛେ߸
C-LIS CO., LTD. ༗ࢁܓೋʢ,FJKJ"3*:"."ʣ C-LIS CO., LTD. AndroidΞϓϦ։ൃऀ ػցֶशॳ৺ऀ
ͬͯ·ͤΜ 1IPUP,PKJ.03*(6$)* "6/$3&"5*7&'*3.
C-LIS CO., LTD.
C-LIS CO., LTD.
લճ·Ͱͷ͓
IUUQTUFDICPPLGFTUPSH"
C-LIS CO., LTD.
C-LIS CO., LTD. IUUQBN[OUPC,3N
C-LIS CO., LTD. .FHBOF /PU
Έͷ؟ڸ່ͬը૾ΛࣗಈͰऩू͍ͨ͠
C-LIS CO., LTD. Ϟσϧ 7((/FUΛࢀߟʹΈࠐΈͷ࿈ଓΛ༻͍ͨ$// ʢ$POWPMVUJPOBM/FVSBM/FUXPSLʣϞσϧ DPO YY DPO
YY GD QPPM Y DPO YY DPO YY QPPM Y GD GD PVUQVU
C-LIS CO., LTD. %BUB"VHNFOUBUJPO ը૾Λ ʜ·ͰɺͦΕͧΕճసͨ͠ը૾Λ࡞ ಡΈࠐΈ࣌ͷॲཧ 3BOEPN$SPQʢQYதɺQYྖҬΛ͘Γൈ͘ʣ 3BOEPN'MJQʢԣ࣠ํʹసʣ
3BOEPN6Q%PXOʢॎ࣠ํʹసʣ 3BOEPN#SJHIUOFTT 3BOEPN$POUSBTU
C-LIS CO., LTD. ܇࿅ ֶशΞϧΰϦζϜ"EBN ֶश ϛχόον
C-LIS CO., LTD. ݕূ σʔληοτ͔ΒΛςετ༻ͱͯ͠ ਖ਼ʙ
Πϥετإݕग़ثʢ'BDF%FUFDUPSʣ
C-LIS CO., LTD. Πϥετإσʔληοτ ؟ڸ່ͬͱͦ͏Ͱͳ͍ͷɻ߹Θͤͯ ຕΛ ਖ਼ྫʢʹإʣͱ͢Δʢ͏ͪςετσʔλຕʣ ෛྫɺطଘͷը૾ΛࡉΕʹͯ͠ɺإ͕ͳ͍෦ ຕΛෛྫͱ͢Δʢ͏ͪςετσʔλຕʣ
C-LIS CO., LTD. Πϥετσʔληοτ ਖ਼ྫ ෛྫ ߹ܭ ܇࿅σʔλ 1,600
3,200 4,800 ςετσʔλ 400 800 1,200 ߹ܭ 2,000 4,005 6,000
C-LIS CO., LTD. Ϟσϧ $*'"3νϡʔτϦΞϧͷϞσϧΛࢀߟʹ υϩοϓΞτʢˋʣΛՃͨ͠$//ʢ$POWPMVUJPOBM/FVSBM /FUXPSLʣ DPO YY
GD QPPM Y DPO YY GD PVUQVU MSO MSO QPPM Y
C-LIS CO., LTD. %BUB"VHNFOUBUJPO ը૾Yʹॖখ ը૾Λ ʜɺͦΕͧΕճసͨ͠ը૾Λ࡞ ಡΈࠐΈ࣌ͷॲཧ 3BOEPN$SPQʢQYதɺQYྖҬͰ͘Γൈ͘ʣ
3BOEPN'MJQʢԣ࣠ํʹసʣ 3BOEPN6Q%PXOʢॎ࣠ํʹసʣ 3BOEPN#SJHIUOFTT 3BOEPN$POUSBTU
C-LIS CO., LTD. ܇࿅ ֶशΞϧΰϦζϜ"EBN ֶश ϛχόον
C-LIS CO., LTD. ܇࿅ ϛχόονɺສεςοϓͷ܇࿅Ͱ ϩε͕·ͰԼ ςετσʔλͰͷਖ਼ղ
إݕग़
C-LIS CO., LTD. إͲ͜ʹ͋Δʁ
C-LIS CO., LTD. 4FMFDUJWF4FBSDI 35$PSQPSBUJPOͷʮ༲͛ϩϘοτʯ 5FOTPS'MPXษڧձʢ̐ʣ݄Ͱൃද IUUQXXXTMJEFTIBSFOFU:VLJ/BLBHBXBUFOTPSqPXSFW
C-LIS CO., LTD. 4FMFDUJWF4FBSDI "MQBDBࣾʹΑΔ࣮ IUUQCMPHKQBMQBDBBJFOUSZ EMJCͷ࣮ IUUQTHJUIVCDPNEBWJTLJOHEMJCCMPCNBTUFS QZUIPO@FYBNQMFTpOE@DBOEJEBUF@PCKFDU@MPDBUJPOTQZ
C-LIS CO., LTD. લճͷ՝ ݕग़࣌ؒͷॖ ೝࣝਫ਼ͷ্
ݕग़࣌ؒͷॖ
C-LIS CO., LTD. إݕग़ͷखॱ ީิྖҬͷΓग़͠ SelectiveSearch
C-LIS CO., LTD. إݕग़ͷखॱ إೝࣝ TensorFlow ީิྖҬͷΓग़͠ SelectiveSearch OݸͷީิྖҬ
C-LIS CO., LTD. άϥϑͱηογϣϯΛҙࣝ͢Δ ީิྖҬͷΓग़͠ SelectiveSearch إೝࣝ TensorFlow άϥϑͷ࡞
ηογϣϯͷ։࢝ tf.Session() άϥϑͷ࣮ߦ run OݸͷީิྖҬ ը૾σʔλʴ ը૾σʔλ
C-LIS CO., LTD. إೝࣝ TensorFlow άϥϑͱηογϣϯΛҙࣝ͢Δ άϥϑͷ࡞ ηογϣϯͷ։࢝ tf.Session()
άϥϑͷ࣮ߦ run άϥϑ Ϧηοτ OݸͷྖҬΛͯ͢ධՁ OݸͷީิྖҬ ը૾σʔλʴ
C-LIS CO., LTD. ࠷దͳྖҬΛ୳ࡧʢ3FHSFTTJPOʣ
C-LIS CO., LTD. إೝࣝ TensorFlow ຖճάϥϑΛ࡞ɾηογϣϯΛ։࢝ άϥϑͷ࡞ ηογϣϯͷ։࢝ άϥϑͷ࣮ߦ
run άϥϑ Ϧηοτ OݸͷྖҬΛͯ͢ධՁ OݸͷީิྖҬ ը૾σʔλʴ
class FaceDetector(object): image_path = None original_image = None graph
= None sess = None queue = None top_k_indices = None top_k_values = None region_batch = None coord = None configuration = None def __init__(self, image_path, batch_size, train_dir): self.image_path = image_path self.original_image = Image.open(image_path) self.original_image = self.original_image.convert('RGB') checkpoint = tf.train.get_checkpoint_state(train_dir) if not (checkpoint and checkpoint.model_checkpoint_path): print('νΣοΫϙΠϯτϑΝΠϧ͕ݟ͔ͭΓ·ͤΜ') return self.graph, self.queue, self.top_k_indices, self.top_k_values, self.region_batch = \ self._init_graph(self.original_image, batch_size) with self.graph.as_default() as g: self.sess = tf.Session() saver = tf.train.Saver() saver.restore(self.sess, checkpoint.model_checkpoint_path) self.coord = tf.train.Coordinator()
def _init_graph(self, image, batch_size): reshaped_image = np.array(image.getdata()).reshape(image.height, image.width, 3).astype(
np.float32) graph = tf.Graph() with graph.as_default() as g: queue = tf.FIFOQueue(3000, tf.int32, shapes=[4]) region = queue.dequeue() whitten_image = self._load_image(reshaped_image, region) image_batch, region_batch = tf.train.batch( [whitten_image, region], batch_size=batch_size, capacity=10000) logits = tf.nn.softmax(model.inference(image_batch, tf.constant(1.0), batch_size)) top_k_values, top_k_indices = tf.nn.top_k(logits, 2, sorted=True) return graph, queue, top_k_indices, top_k_values, region_batch
def _eval(self, region_list, batch_size): result = [] with
graph.as_default() as g: threads = tf.train.start_queue_runners(sess=sess, coord=coord) step = 0 try: # όοναΠζʹ߹ΘͤͯΛௐ while len(region_list) < batch_size or len(region_list) % batch_size != 0: add = region_list[0:(batch_size - (len(region_list) % batch_size))] region_list = region_list + add region_list = np.array(region_list) enqueue = queue.enqueue_many(region_list) sess.run(enqueue) num_iter = int(math.ceil(len(region_list) / batch_size)) while step < num_iter and not coord.should_stop(): # ҎԼུ
C-LIS CO., LTD. إೝࣝ TensorFlow ީิྖҬͷΈ༩͑Δ άϥϑͷ࡞ ηογϣϯͷ։࢝ άϥϑͷ࣮ߦ
run άϥϑ Ϧηοτ OݸͷྖҬΛͯ͢ධՁ ը૾σʔλ OݸͷީิྖҬ
ೝࣝਫ਼ͷ্ σʔληοτͷ֦ॆ
C-LIS CO., LTD. 5XJUUFS"1* ಛఆͷϢʔβʔͷλΠϜϥΠϯʹߘ͞ΕͨϝσΟΞ ʢը૾ʣΛμϯϩʔυ ϋογϡΛܭࢉͯ͠ॏෳը૾ΛϑΟϧλϦϯά ʢαΠζҧ͍ͳͲͷྨࣅը૾ফ͖͠Εͳ͍ʣ
C-LIS CO., LTD. Πϥετإσʔλऩूʹ ࠷దͳΞΧϯτ !CPU@FSFDUJPO IUUQTUXJUUFSDPNCPU@FSFDUJPO
C-LIS CO., LTD. ࿐ࠎʹੑతͳը૾ɺ΄΅ଘࡏ͠ͳ͍ πΠʔτʹඞͣը૾͕ఴ͞Ε͍ͯΔ ը૾ʹਓҎ্ͷঁͷࢠͷإؚ͕·Ε͍ͯΔ
5XJUUFS͔Βऔಘͨ͠ϑΝΠϧ ݕग़ͨ͠إྖҬͷɹɹɹɹɹɹɹɹ
C-LIS CO., LTD. { "detected_faces": { "mode": "selective_search", "regions": [
{ "label": 1, "rect": { "left": 212.0, "bottom": 654.0, "top": 94.0, "right": 483.0 }, "probability": 0.9994481205940247 } ] }, "created_at": "2016-09-28T03:37:16.223942", "file_name": "kage_maturi-CAARxE8UwAEzAjJ.jpg", "generator": "Megane Co" } ݁ՌΛ+40/Ͱॻ͖ग़͠
C-LIS CO., LTD. 3FHJPO$SPQQFS +BWB'9 ,PUMJO IUUQTHJUIVCDPNLFJKJSFHJPO@DSPQQFS
%FNP
C-LIS CO., LTD. 3FHJPO$SPQQFS /FXGFBUVSF ɾબதͷྖҬΛϑΥʔΧε ɾ6OEP ɾTFUUJOHTKTPOʹΑΔઃఆ ɹϥϕϧ͝ͱͷઢ৭ ɹฤूɺআͷՄ൱
IUUQTHJUIVCDPNLFJKJSFHJPO@DSPQQFS
C-LIS CO., LTD. ݕग़ͨ͠إྖҬͷʢॏෳΛআʣɹɹɹɹɹɹɹɹ إʢਖ਼ྫʣ ޡݕग़ʢෛྫʣ
C-LIS CO., LTD. ৽σʔληοτ ਖ਼ྫ ෛྫ ߹ܭ ܇࿅σʔλ 10,453
10,792 21,245 ςετσʔλ 2,619 2,703 5,322 ߹ܭ 13,072 13,495 26,567
C-LIS CO., LTD. ৽σʔληοτʹΑΔ܇࿅ ϛχόονɺສεςοϓͷ܇࿅Ͱ ϩε͕·ͰԼ ςετσʔλʹΑΔݕূͰͷਖ਼ղ
C-LIS CO., LTD. چσʔληοτ ਖ਼ྫ ෛྫ ߹ܭ ܇࿅σʔλ 1,600
3,200 4,800 ςετσʔλ 400 800 1,200 ߹ܭ 2,000 4,005 6,000
C-LIS CO., LTD. چσʔληοτͷ܇࿅ ϛχόονɺສεςοϓͷ܇࿅Ͱ ϩε͕·ͰԼ ςετσʔλͰͷݕূͰͷਖ਼ղ
C-LIS CO., LTD. ৽Ϟσϧੑೳ͕ѱ͍ʁ چςετσʔλ چϞσϧ ৽ςετσʔλ ৽Ϟσϧ
C-LIS CO., LTD. ৽چͷςετσʔλΛަ چϞσϧ ৽ςετσʔλ چςετσʔλ ৽Ϟσϧ
C-LIS CO., LTD. ৽چͷςετσʔλΛݕূ چϞσϧ ৽ςετσʔλ چςετσʔλ ৽Ϟσϧ
چςετσʔλ چϞσϧ ৽ςετσʔλ ৽Ϟσϧ
C-LIS CO., LTD. إೝࣝʹࣦഊͨ͠σʔλΛݕূ ʢچςετσʔλʣ OPU@GBDF GBDF
C-LIS CO., LTD. إೝࣝʹࣦഊͨ͠σʔλΛݕূ ʢ৽ςετσʔλʣ OPU@GBDF GBDF
࣍ճ༧ࠂ
C-LIS CO., LTD. σʔλͷΫϨϯδϯάʹΑΔೝࣝਫ਼ͷมԽΛݟΔ ݕग़Λ͞Βʹվળ͢Δ ࣍ճ༧ࠂ IUUQTXXXTBLVSBBEKQLPVLBSZPLV
C-LIS CO., LTD. C-LIS CO., LTD. ຊࢿྉɺ༗ݶձࣾγʔϦεͷஶ࡞Ͱ͢ɻܝࡌ͞Ε͍ͯΔΠϥετʹݸผʹஶ࡞ݖ͕͋Γ·͢ɻ ຊࢿྉͷશ෦ɺ·ͨҰ෦ʹ͍ͭͯɺஶ࡞ऀ͔ΒจॻʹΑΔڐΛಘͣʹෳ͢Δ͜ͱې͡ΒΕ͍ͯ·͢ɻ ໊֤ɾϒϥϯυ໊ɺձ໊ࣾͳͲɺҰൠʹ֤ࣾͷඪ·ͨొඪͰ͢ɻຊࢿྉதͰɺɺɺäΛׂѪͯ͠ ͍·͢ɻ