Detecta rostros en un video almacenado en Cloud Storage.
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Muestra de código
Java
import com.google.api.gax.longrunning.OperationFuture;
import com.google.cloud.videointelligence.v1p3beta1.AnnotateVideoProgress;
import com.google.cloud.videointelligence.v1p3beta1.AnnotateVideoRequest;
import com.google.cloud.videointelligence.v1p3beta1.AnnotateVideoResponse;
import com.google.cloud.videointelligence.v1p3beta1.DetectedAttribute;
import com.google.cloud.videointelligence.v1p3beta1.FaceDetectionAnnotation;
import com.google.cloud.videointelligence.v1p3beta1.FaceDetectionConfig;
import com.google.cloud.videointelligence.v1p3beta1.Feature;
import com.google.cloud.videointelligence.v1p3beta1.TimestampedObject;
import com.google.cloud.videointelligence.v1p3beta1.Track;
import com.google.cloud.videointelligence.v1p3beta1.VideoAnnotationResults;
import com.google.cloud.videointelligence.v1p3beta1.VideoContext;
import com.google.cloud.videointelligence.v1p3beta1.VideoIntelligenceServiceClient;
import com.google.cloud.videointelligence.v1p3beta1.VideoSegment;
public class DetectFacesGcs {
public static void detectFacesGcs() throws Exception {
// TODO(developer): Replace these variables before running the sample.
String gcsUri = "gs://cloud-samples-data/video/googlework_short.mp4";
detectFacesGcs(gcsUri);
}
// Detects faces in a video stored in Google Cloud Storage using the Cloud Video Intelligence API.
public static void detectFacesGcs(String gcsUri) throws Exception {
try (VideoIntelligenceServiceClient videoIntelligenceServiceClient =
VideoIntelligenceServiceClient.create()) {
FaceDetectionConfig faceDetectionConfig =
FaceDetectionConfig.newBuilder()
// Must set includeBoundingBoxes to true to get facial attributes.
.setIncludeBoundingBoxes(true)
.setIncludeAttributes(true)
.build();
VideoContext videoContext =
VideoContext.newBuilder().setFaceDetectionConfig(faceDetectionConfig).build();
AnnotateVideoRequest request =
AnnotateVideoRequest.newBuilder()
.setInputUri(gcsUri)
.addFeatures(Feature.FACE_DETECTION)
.setVideoContext(videoContext)
.build();
// Detects faces in a video
OperationFuture<AnnotateVideoResponse, AnnotateVideoProgress> future =
videoIntelligenceServiceClient.annotateVideoAsync(request);
System.out.println("Waiting for operation to complete...");
AnnotateVideoResponse response = future.get();
// Gets annotations for video
VideoAnnotationResults annotationResult = response.getAnnotationResultsList().get(0);
// Annotations for list of people detected, tracked and recognized in video.
for (FaceDetectionAnnotation faceDetectionAnnotation :
annotationResult.getFaceDetectionAnnotationsList()) {
System.out.print("Face detected:\n");
for (Track track : faceDetectionAnnotation.getTracksList()) {
VideoSegment segment = track.getSegment();
System.out.printf(
"\tStart: %d.%.0fs\n",
segment.getStartTimeOffset().getSeconds(),
segment.getStartTimeOffset().getNanos() / 1e6);
System.out.printf(
"\tEnd: %d.%.0fs\n",
segment.getEndTimeOffset().getSeconds(), segment.getEndTimeOffset().getNanos() / 1e6);
// Each segment includes timestamped objects that
// include characteristics of the face detected.
TimestampedObject firstTimestampedObject = track.getTimestampedObjects(0);
for (DetectedAttribute attribute : firstTimestampedObject.getAttributesList()) {
// Attributes include unique pieces of clothing, like glasses,
// poses, or hair color.
System.out.printf("\tAttribute: %s;\n", attribute.getName());
}
}
}
}
}
}Node.js
/**
* TODO(developer): Uncomment these variables before running the sample.
*/
// const gcsUri = 'GCS URI of the video to analyze, e.g. gs://my-bucket/my-video.mp4';
// Imports the Google Cloud Video Intelligence library + Node's fs library
const Video = require('@google-cloud/video-intelligence').v1p3beta1;
// Creates a client
const video = new Video.VideoIntelligenceServiceClient();
async function detectFacesGCS() {
const request = {
inputUri: gcsUri,
features: ['FACE_DETECTION'],
videoContext: {
faceDetectionConfig: {
// Must set includeBoundingBoxes to true to get facial attributes.
includeBoundingBoxes: true,
includeAttributes: true,
},
},
};
// Detects faces in a video
// We get the first result because we only process 1 video
const [operation] = await video.annotateVideo(request);
const results = await operation.promise();
console.log('Waiting for operation to complete...');
// Gets annotations for video
const faceAnnotations =
results[0].annotationResults[0].faceDetectionAnnotations;
for (const {tracks} of faceAnnotations) {
console.log('Face detected:');
for (const {segment, timestampedObjects} of tracks) {
if (segment.startTimeOffset.seconds === undefined) {
segment.startTimeOffset.seconds = 0;
}
if (segment.startTimeOffset.nanos === undefined) {
segment.startTimeOffset.nanos = 0;
}
if (segment.endTimeOffset.seconds === undefined) {
segment.endTimeOffset.seconds = 0;
}
if (segment.endTimeOffset.nanos === undefined) {
segment.endTimeOffset.nanos = 0;
}
console.log(
`\tStart: ${segment.startTimeOffset.seconds}.` +
`${(segment.startTimeOffset.nanos / 1e6).toFixed(0)}s`
);
console.log(
`\tEnd: ${segment.endTimeOffset.seconds}.` +
`${(segment.endTimeOffset.nanos / 1e6).toFixed(0)}s`
);
// Each segment includes timestamped objects that
// include characteristics of the face detected.
const [firstTimestapedObject] = timestampedObjects;
for (const {name} of firstTimestapedObject.attributes) {
// Attributes include 'glasses', 'headwear', 'smiling'.
console.log(`\tAttribute: ${name}; `);
}
}
}
}
detectFacesGCS();Python
from google.cloud import videointelligence_v1p3beta1 as videointelligence
def detect_faces(gcs_uri="gs://YOUR_BUCKET_ID/path/to/your/video.mp4"):
"""Detects faces in a video."""
client = videointelligence.VideoIntelligenceServiceClient()
# Configure the request
config = videointelligence.FaceDetectionConfig(
include_bounding_boxes=True, include_attributes=True
)
context = videointelligence.VideoContext(face_detection_config=config)
# Start the asynchronous request
operation = client.annotate_video(
request={
"features": [videointelligence.Feature.FACE_DETECTION],
"input_uri": gcs_uri,
"video_context": context,
}
)
print("\nProcessing video for face detection annotations.")
result = operation.result(timeout=300)
print("\nFinished processing.\n")
# Retrieve the first result, because a single video was processed.
annotation_result = result.annotation_results[0]
for annotation in annotation_result.face_detection_annotations:
print("Face detected:")
for track in annotation.tracks:
print(
"Segment: {}s to {}s".format(
track.segment.start_time_offset.seconds
+ track.segment.start_time_offset.microseconds / 1e6,
track.segment.end_time_offset.seconds
+ track.segment.end_time_offset.microseconds / 1e6,
)
)
# Each segment includes timestamped faces that include
# characteristics of the face detected.
# Grab the first timestamped face
timestamped_object = track.timestamped_objects[0]
box = timestamped_object.normalized_bounding_box
print("Bounding box:")
print("\tleft : {}".format(box.left))
print("\ttop : {}".format(box.top))
print("\tright : {}".format(box.right))
print("\tbottom: {}".format(box.bottom))
# Attributes include glasses, headwear, smiling, direction of gaze
print("Attributes:")
for attribute in timestamped_object.attributes:
print(
"\t{}:{} {}".format(
attribute.name, attribute.value, attribute.confidence
)
)