回答編集履歴
2
d
test
CHANGED
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@@ -25,3 +25,133 @@
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ちなみに、Youtube の動画は一般的に30FPSです。
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## 追記
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```python
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def detect_video(yolo, video_path, output_path=""):
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import cv2
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vid = cv2.VideoCapture(video_path)
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if not vid.isOpened():
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raise IOError("Couldn't open webcam or video")
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video_FourCC = int(vid.get(cv2.CAP_PROP_FOURCC))
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video_fps = vid.get(cv2.CAP_PROP_FPS)
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video_size = (
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int(vid.get(cv2.CAP_PROP_FRAME_WIDTH)),
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int(vid.get(cv2.CAP_PROP_FRAME_HEIGHT)),
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)
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isOutput = True if output_path != "" else False
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if isOutput:
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print(
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"!!! TYPE:",
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type(output_path),
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type(video_FourCC),
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type(video_fps),
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type(video_size),
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)
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out = cv2.VideoWriter(output_path, video_FourCC, video_fps, video_size)
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accum_time = 0
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curr_fps = 0
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fps = "FPS: ??"
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prev_time = timer()
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i = 0
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while True:
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return_value, frame = vid.read()
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image = Image.fromarray(frame)
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if i % 3 == 0:
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image = yolo.detect_image(image)
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result = np.asarray(image)
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curr_time = timer()
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exec_time = curr_time - prev_time
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prev_time = curr_time
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accum_time = accum_time + exec_time
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curr_fps = curr_fps + 1
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if accum_time > 1:
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accum_time = accum_time - 1
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fps = "FPS: " + str(curr_fps)
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curr_fps = 0
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cv2.putText(
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result,
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text=fps,
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org=(3, 15),
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fontFace=cv2.FONT_HERSHEY_SIMPLEX,
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fontScale=0.50,
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color=(255, 0, 0),
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thickness=2,
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)
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cv2.namedWindow("result", cv2.WINDOW_NORMAL)
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cv2.imshow("result", result)
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if isOutput:
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out.write(result)
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if cv2.waitKey(1) & 0xFF == ord("q"):
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break
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i += 1
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yolo.close_session()
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```
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1
修正
test
CHANGED
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@@ -16,6 +16,12 @@
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その頻度の検出でも使いたい用途で問題ないのであれば、それでいいのではないでしょうか。
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-
動画は30FPSで流したい場合は「3フレームに1回だけ検出す
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動画は30FPSで流したい場合は「3フレームに1回だけ検出して、残り2フレームは前回検出した結果を使い回す」とか工夫すれば、動画自体は30FPSで流せます。
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----
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-
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27
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+
ちなみに、Youtube の動画は一般的に30FPSです。
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