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Hello Amazon Rekognition - AWS SDK Code Examples

There are more AWS SDK examples available in the AWS Doc SDK Examples GitHub repo.

There are more AWS SDK examples available in the AWS Doc SDK Examples GitHub repo.

Hello Amazon Rekognition

The following code example shows how to get started using Amazon Rekognition.

C++
SDK for C++
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.

Code for the CMakeLists.txt CMake file.

# Set the minimum required version of CMake for this project. cmake_minimum_required(VERSION 3.13) # Set the AWS service components used by this project. set(SERVICE_COMPONENTS rekognition) # Set this project's name. project("hello_rekognition") # Set the C++ standard to use to build this target. # At least C++ 11 is required for the AWS SDK for C++. set(CMAKE_CXX_STANDARD 11) # Use the MSVC variable to determine if this is a Windows build. set(WINDOWS_BUILD ${MSVC}) if (WINDOWS_BUILD) # Set the location where CMake can find the installed libraries for the AWS SDK. string(REPLACE ";" "/aws-cpp-sdk-all;" SYSTEM_MODULE_PATH "${CMAKE_SYSTEM_PREFIX_PATH}/aws-cpp-sdk-all") list(APPEND CMAKE_PREFIX_PATH ${SYSTEM_MODULE_PATH}) endif () # Find the AWS SDK for C++ package. find_package(AWSSDK REQUIRED COMPONENTS ${SERVICE_COMPONENTS}) if (WINDOWS_BUILD AND AWSSDK_INSTALL_AS_SHARED_LIBS) # Copy relevant AWS SDK for C++ libraries into the current binary directory for running and debugging. # set(BIN_SUB_DIR "/Debug") # If you are building from the command line, you may need to uncomment this # and set the proper subdirectory to the executables' location. AWSSDK_CPY_DYN_LIBS(SERVICE_COMPONENTS "" ${CMAKE_CURRENT_BINARY_DIR}${BIN_SUB_DIR}) endif () add_executable(${PROJECT_NAME} hello_rekognition.cpp) target_link_libraries(${PROJECT_NAME} ${AWSSDK_LINK_LIBRARIES})

Code for the hello_rekognition.cpp source file.

#include <aws/core/Aws.h> #include <aws/rekognition/RekognitionClient.h> #include <aws/rekognition/model/ListCollectionsRequest.h> #include <iostream> /* * A "Hello Rekognition" starter application which initializes an Amazon Rekognition client and * lists the Amazon Rekognition collections in the current account and region. * * main function * * Usage: 'hello_rekognition' * */ int main(int argc, char **argv) { Aws::SDKOptions options; // Optional: change the log level for debugging. // options.loggingOptions.logLevel = Aws::Utils::Logging::LogLevel::Debug; Aws::InitAPI(options); // Should only be called once. { Aws::Client::ClientConfiguration clientConfig; // Optional: Set to the AWS Region (overrides config file). // clientConfig.region = "us-east-1"; Aws::Rekognition::RekognitionClient rekognitionClient(clientConfig); Aws::Rekognition::Model::ListCollectionsRequest request; Aws::Rekognition::Model::ListCollectionsOutcome outcome = rekognitionClient.ListCollections(request); if (outcome.IsSuccess()) { const Aws::Vector<Aws::String>& collectionsIds = outcome.GetResult().GetCollectionIds(); if (!collectionsIds.empty()) { std::cout << "collectionsIds: " << std::endl; for (auto &collectionId : collectionsIds) { std::cout << "- " << collectionId << std::endl; } } else { std::cout << "No collections found" << std::endl; } } else { std::cerr << "Error with ListCollections: " << outcome.GetError() << std::endl; } } Aws::ShutdownAPI(options); // Should only be called once. return 0; }
SDK for C++
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.

Code for the CMakeLists.txt CMake file.

# Set the minimum required version of CMake for this project. cmake_minimum_required(VERSION 3.13) # Set the AWS service components used by this project. set(SERVICE_COMPONENTS rekognition) # Set this project's name. project("hello_rekognition") # Set the C++ standard to use to build this target. # At least C++ 11 is required for the AWS SDK for C++. set(CMAKE_CXX_STANDARD 11) # Use the MSVC variable to determine if this is a Windows build. set(WINDOWS_BUILD ${MSVC}) if (WINDOWS_BUILD) # Set the location where CMake can find the installed libraries for the AWS SDK. string(REPLACE ";" "/aws-cpp-sdk-all;" SYSTEM_MODULE_PATH "${CMAKE_SYSTEM_PREFIX_PATH}/aws-cpp-sdk-all") list(APPEND CMAKE_PREFIX_PATH ${SYSTEM_MODULE_PATH}) endif () # Find the AWS SDK for C++ package. find_package(AWSSDK REQUIRED COMPONENTS ${SERVICE_COMPONENTS}) if (WINDOWS_BUILD AND AWSSDK_INSTALL_AS_SHARED_LIBS) # Copy relevant AWS SDK for C++ libraries into the current binary directory for running and debugging. # set(BIN_SUB_DIR "/Debug") # If you are building from the command line, you may need to uncomment this # and set the proper subdirectory to the executables' location. AWSSDK_CPY_DYN_LIBS(SERVICE_COMPONENTS "" ${CMAKE_CURRENT_BINARY_DIR}${BIN_SUB_DIR}) endif () add_executable(${PROJECT_NAME} hello_rekognition.cpp) target_link_libraries(${PROJECT_NAME} ${AWSSDK_LINK_LIBRARIES})

Code for the hello_rekognition.cpp source file.

#include <aws/core/Aws.h> #include <aws/rekognition/RekognitionClient.h> #include <aws/rekognition/model/ListCollectionsRequest.h> #include <iostream> /* * A "Hello Rekognition" starter application which initializes an Amazon Rekognition client and * lists the Amazon Rekognition collections in the current account and region. * * main function * * Usage: 'hello_rekognition' * */ int main(int argc, char **argv) { Aws::SDKOptions options; // Optional: change the log level for debugging. // options.loggingOptions.logLevel = Aws::Utils::Logging::LogLevel::Debug; Aws::InitAPI(options); // Should only be called once. { Aws::Client::ClientConfiguration clientConfig; // Optional: Set to the AWS Region (overrides config file). // clientConfig.region = "us-east-1"; Aws::Rekognition::RekognitionClient rekognitionClient(clientConfig); Aws::Rekognition::Model::ListCollectionsRequest request; Aws::Rekognition::Model::ListCollectionsOutcome outcome = rekognitionClient.ListCollections(request); if (outcome.IsSuccess()) { const Aws::Vector<Aws::String>& collectionsIds = outcome.GetResult().GetCollectionIds(); if (!collectionsIds.empty()) { std::cout << "collectionsIds: " << std::endl; for (auto &collectionId : collectionsIds) { std::cout << "- " << collectionId << std::endl; } } else { std::cout << "No collections found" << std::endl; } } else { std::cerr << "Error with ListCollections: " << outcome.GetError() << std::endl; } } Aws::ShutdownAPI(options); // Should only be called once. return 0; }
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