如何从Ruby中的GCP Aiplatform获得图像分类预测？

Question

我是Ruby的新手，我想使用GCP AIPLATFORM，但我在有效载荷方面挣扎。

到目前为止，我已经：

client = ::Google::Cloud::AIPlatform::V1::PredictionService::Client.new do |config|
  config.endpoint = "#{location}-aiplatform.googleapis.com"
end

img = File.open(imgPath, 'rb') do |img|
  'data:image/png;base64,' + Base64.strict_encode64(img.read)
end

instance = Instance.new(:content => img)

request = Google::Cloud::AIPlatform::V1::PredictRequest.new(
  endpoint: "projects/#{project}/locations/#{location}/endpoints/#{endpoint}",
  instances: [instance]
)

result = client.predict request
p result

这是我的原始错误

message Instance {
  required bytes content = 1;
};

，但是我有以下错误：无效的类型实例可以分配给combessage字段'instances'

我读了文档，但对于ruby sdk来说，这有点轻。 参数还可以，在此处的JS示例： https://github.com/googleapis/nodejs-ai-platform/blob/main/main/samples/predict-image-image-object-detection.js 我正在与这些参数一起工作，

我做错了什么？

Answer 1

我管理了

client = Google::Cloud::AIPlatform::V1::PredictionService::Client.new do |config|
  config.endpoint = "#{location}-aiplatform.googleapis.com"
end

img = File.open(imgPath, 'rb') do |img|
  Base64.strict_encode64(img.read)
end

instance = Google::Protobuf::Value.new(:struct_value => {:fields => {
  :content => {:string_value => img}
}})
endpoint = "projects/#{project}/locations/#{location}/endpoints/#{endpoint}"


request = Google::Cloud::AIPlatform::V1::PredictRequest.new(
  endpoint: endpoint,
  instances: [instance]
)

result = client.predict request
p result

Google :: Protobuf :: Value对我来说很丑陋，但它起作用了