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我正在尝试使用下面的 Python 文档来使用 OBJECT_TRACKING METHOD。该脚本有效,但我想知道如何下载 JSON。我刚开始使用 Python。

注意:下面的 Javier 现在已经回答了这个问题。我已经修改了下面的脚本,以向寻求相同解决方案的其他人显示答案。有一个 output_uri 变量,在操作函数中,添加了 output_uri 参数以在您之前声明的 GCS 位置创建一个 response.json。

import os
os.environ['GOOGLE_APPLICATION_CREDENTIALS']='your-service-credentials-json-file.json'
"""Object tracking in a video stored on GCS."""
from google.cloud import videointelligence

video_client = videointelligence.VideoIntelligenceServiceClient()
features = [videointelligence.enums.Feature.OBJECT_TRACKING]
gcs_uri = 'gs://video_intel/video1.mp4'
output_uri = 'gs://video_intel/response.json'

operation = video_client.annotate_video(input_uri=gcs_uri, features=features, 
output_uri=output_uri)
print("\nProcessing video for object annotations.")

result = operation.result(timeout=300)
print("\nFinished processing.\n")

# The first result is retrieved because a single video was processed.
object_annotations = result.annotation_results[0].object_annotations

for object_annotation in object_annotations:
    print("Entity description: {}".format(object_annotation.entity.description))
    if object_annotation.entity.entity_id:
        print("Entity id: {}".format(object_annotation.entity.entity_id))

    print(
        "Segment: {}s to {}s".format(
            object_annotation.segment.start_time_offset.seconds
            + object_annotation.segment.start_time_offset.nanos / 1e9,
            object_annotation.segment.end_time_offset.seconds
            + object_annotation.segment.end_time_offset.nanos / 1e9,
        )
    )

    print("Confidence: {}".format(object_annotation.confidence))

    # Here we print only the bounding box of the first frame in the segment
    frame = object_annotation.frames[0]
    box = frame.normalized_bounding_box
    print(
        "Time offset of the first frame: {}s".format(
            frame.time_offset.seconds + frame.time_offset.nanos / 1e9
        )
    )
    print("Bounding box position:")
    print("\tleft  : {}".format(box.left))
    print("\ttop   : {}".format(box.top))
    print("\tright : {}".format(box.right))
    print("\tbottom: {}".format(box.bottom))
    print("\n")

在此处输入图像描述

4

1 回答 1

1

annotate_video方法的文档中,您可以找到一个名为 output_uri 的参数,您可以将其用于此目的:

output_uri (str) -- 可选。应存储输出(JSON 格式)的位置。目前仅支持Google Cloud Storage URI,必须按以下格式指定:gs://bucket-id/object-id(其他 URI 格式返回 google.rpc.Code.INVALID_ARGUMENT)。有关详细信息,请参阅请求 URI

于 2020-10-05T06:58:05.720 回答