On-the-Edge
Mobile OCR SDK

// Java
OCRStudioSDKInstance engine_instance = OCRStudioSDKInstance.CreateFromPath(<PATH_TO_CONFIGURATION_FILE>);
OCRStudioSDKSession session = engine_instance.CreateSession(<SIGNATURE>,
  "{\"session_type\": \"document_recognition\", \"target_group_type\": \"default\", \"target_masks\": \"chn.passport.*\"}");
OCRStudioSDKImage image = OCRStudioSDKImage.CreateFromFile(<PATH_TO_IMAGE>);
session.ProcessImage(image);
OCRStudioSDKResult result = session.CurrentResult();
OCRStudioSDKTarget target = result.TargetByIndex(0);
for (OCRStudioSDKItemIterator item_it = target.ItemsBegin("string"); !item_it.IsEqualTo(target.ItemsEnd("string")); item_it.Step()) {
  String name = item_it.Item().Name();
  String value = item_it.Item().Value();
  }

// C++
std::unique_ptr<ocrstudio::OCRStudioSDKInstance> engine_instance(ocrstudio::OCRStudioSDKInstance::CreateFromPath(<PATH_TO_CONFIGURATION_FILE>));
std::unique_ptr<ocrstudio::OCRStudioSDKSession> session(engine_instance->CreateSession(<SIGNATURE>,
  "{\"session_type\": \"document_recognition\", \"target_group_type\": \"default\", \"target_masks\": \"chn.passport.*\"}"));
std::unique_ptr<ocrstudio::OCRStudioSDKImage> image(ocrstudio::OCRStudioSDKImage::CreateFromFile(<PATH_TO_IMAGE>));
session->ProcessImage(*image);
const ocrstudio::OCRStudioSDKResult& result = session->CurrentResult();
const ocrstudio::OCRStudioSDKTarget& target = result.TargetByIndex(0);
for (auto item_it = target.ItemsBegin("string"); item_it != target.ItemsEnd("string"); item_it.Step()) {
  std::string name = item_it.Item().Name();
  std::string value = item_it.Item().Value();
  }

// JavaScript
importScripts("ocrstudiosdk_wasm.js")
const OCRSTUDIOSDK = await OCRStudioSDK(module)
instance = new OCRSTUDIOSDK.OCRStudioSDKInstance(
  "{ \"enable_lazy_initialization\": false, \"enable_delayed_initialization\": true, \"initialization_num_threads\": 1}"
)
const spawnedSession = instance.CreateSession(
  <SIGNATURE>, "{\"session_type\": \"document_recognition\", \"target_group_type\": \"default\", \"target_masks\": \"chn.passport.*\"}")
// <input type="file" id="file-selector"> must exist in HTML
fileSelector = document.querySelector("#file-selector")

fileSelector.addEventListener('change', async (event) => {
  const file = event.target.files[0];
  const { buffer, width, height } = await getImageBuffer(file);
  const rawData = new Uint8Array(buffer);
  let fileBufPtr = 0;
  const cap = Math.max(rawData.byteLength * 1.5, 8 * 1024 * 1024);
  fileBufPtr = OCRSTUDIOSDK._malloc(cap);
  OCRSTUDIOSDK.HEAPU8.set(rawData, fileBufPtr);
  const channels = rawData.byteLength / (height * width);
  const image = OCRSTUDIOSDK.CreateFromRawBuffer(fileBufPtr, rawData.byteLength, width, height, channels >= 3 ? rawData.byteLength / height : width, channels);
  spawnedSession.ProcessImage(image);
  const result = spawnedSession.CurrentResult();
});