Chilkat Examples

ChilkatHOMEAndroid™Classic ASPCC++C#Mono C#.NET Core C#C# UWP/WinRTDataFlexDelphi ActiveXDelphi DLLVisual FoxProJavaLianjaMFCObjective-CPerlPHP ActiveXPHP ExtensionPowerBuilderPowerShellPureBasicCkPythonChilkat2-PythonRubySQL ServerSwift 2Swift 3/4TclUnicode CUnicode C++Visual Basic 6.0VB.NETVB.NET UWP/WinRTVBScriptXojo PluginNode.jsExcelGo

C# Examples

Web API Categories

ASN.1
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Async
Azure Cloud Storage
Azure Service Bus
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Compression
DKIM / DomainKey
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
ECC
Email Object
Encryption
FTP
FileAccess
Firebase
GMail REST API
Geolocation
Google APIs
Google Calendar
Google Cloud Storage
Google Drive
Google Photos
Google Sheets
Google Tasks
Gzip
HTML-to-XML/Text

HTTP
HTTP Misc
IMAP
JSON
JSON Web Encryption (JWE)
JSON Web Signatures (JWS)
JSON Web Token (JWT)
Java KeyStore (JKS)
MHT / HTML Email
MIME
Microsoft Graph
NTLM
OAuth1
OAuth2
OneDrive
OpenSSL
Outlook
PEM
PFX/P12
POP3
PRNG
REST
REST Misc
RSA
SCP
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
SharePoint
Socket/SSL/TLS
Spider
Stream
Tar Archive
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl

 

 

 

(C#) Google Cloud Vision Text Detection

Demonstrates calling the Google Cloud Vision for text detection (performs Optical Character Recognition). "Detects and extracts text within an image with support for a broad range of languages. It also features automatic language identification." See https://cloud.google.com/vision/docs/detecting-text

Chilkat .NET Downloads

Chilkat .NET Assemblies

Chilkat for .NET Core

Chilkat for Mono

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// Build the following request:

// {
//   "requests": [
//     {
//       "image": {
//         "content": "/9j/7QBEUGhvdG9zaG9...base64-encoded-image-content...fXNWzvDEeYxxxzj/Coa6Bax//Z"
//       },
//       "features": [
//         {
//           "type": "TEXT_DETECTION"
//         }
//       ]
//     }
//   ]
// }

// Use this online tool to generate the code from sample JSON: 
// Generate Code to Create JSON

// Load an image file.
Chilkat.BinData imageData = new Chilkat.BinData();
// This image file contains some text...
bool success = imageData.LoadFile("qa_data/jpg/text.jpg");
if (success != true) {
    Debug.WriteLine("Failed to load image file.");
    return;
}

// Create the above JSON.
Chilkat.JsonObject json = new Chilkat.JsonObject();
json.UpdateBd("requests[0].image.content","base64",imageData);
json.UpdateString("requests[0].features[0].type","TEXT_DETECTION");

// Send the following POST with the HTTP request body containing the above JSON.
// POST https://vision.googleapis.com/v1/images:annotate?key=YOUR_API_KEY

Chilkat.Http http = new Chilkat.Http();
Chilkat.StringBuilder sb = new Chilkat.StringBuilder();
string url = "https://vision.googleapis.com/v1/images:annotate?key=YOUR_API_KEY";
Chilkat.HttpResponse resp = http.PostJson3(url,"application/json",json);
if (http.LastMethodSuccess != true) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

Debug.WriteLine("status = " + Convert.ToString(resp.StatusCode));

// A 200 response status indicate success.
if (resp.StatusCode != 200) {
    Debug.WriteLine(resp.BodyStr);
    Debug.WriteLine("Failed.");

    return;
}

Chilkat.StringBuilder sbResponseBody = new Chilkat.StringBuilder();
resp.GetBodySb(sbResponseBody);
sbResponseBody.WriteFile("qa_output/textDetectResponse.json","utf-8",false);
json.LoadSb(sbResponseBody);

// The response is a JSON document like this:

// Use this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON

// {
//   "responses": [
//     {
//       "textAnnotations": [
//         {
//           "locale": "en",
//           "description": "Chilkat is a cross-language, cross-platform\nAPl providing 90+ classes for many Internet\nprotocols, formats, and algorithms.\n",
//           "boundingPoly": {
//             "vertices": [
//               {
//                 "x": 17,
//                 "y": 14
//               },
// 	...
//             ]
//           }
//         ],
//         "text": "Chilkat is a cross-language, cross-platform\nAPl providing 90+ classes for many Internet\nprotocols, formats, and algorithms.\n"
//       }
//     }
//   ]
// }

// The parsing code generated from the online tool:

int i;
int count_i;
string fullTextAnnotationText;
int j;
int count_j;
string locale;
string description;
int k;
int count_k;
int x;
int y;
int width;
int height;
string languageCode;
string blockType;
int i1;
int count_i1;
Chilkat.JsonObject json1 = null;
int j1;
int count_j1;
int k1;
int count_k1;
string text;
string propertyDetectedBreakType;
int i2;
int count_i2;
Chilkat.JsonObject json2 = null;

i = 0;
count_i = json.SizeOfArray("responses");
while (i < count_i) {
    json.I = i;
    fullTextAnnotationText = json.StringOf("responses[i].fullTextAnnotation.text");
    j = 0;
    count_j = json.SizeOfArray("responses[i].textAnnotations");
    while (j < count_j) {
        json.J = j;
        locale = json.StringOf("responses[i].textAnnotations[j].locale");
        description = json.StringOf("responses[i].textAnnotations[j].description");
        k = 0;
        count_k = json.SizeOfArray("responses[i].textAnnotations[j].boundingPoly.vertices");
        while (k < count_k) {
            json.K = k;
            x = json.IntOf("responses[i].textAnnotations[j].boundingPoly.vertices[k].x");
            y = json.IntOf("responses[i].textAnnotations[j].boundingPoly.vertices[k].y");
            k = k + 1;
        }

        j = j + 1;
    }

    j = 0;
    count_j = json.SizeOfArray("responses[i].fullTextAnnotation.pages");
    while (j < count_j) {
        json.J = j;
        width = json.IntOf("responses[i].fullTextAnnotation.pages[j].width");
        height = json.IntOf("responses[i].fullTextAnnotation.pages[j].height");
        k = 0;
        count_k = json.SizeOfArray("responses[i].fullTextAnnotation.pages[j].property.detectedLanguages");
        while (k < count_k) {
            json.K = k;
            languageCode = json.StringOf("responses[i].fullTextAnnotation.pages[j].property.detectedLanguages[k].languageCode");
            k = k + 1;
        }

        k = 0;
        count_k = json.SizeOfArray("responses[i].fullTextAnnotation.pages[j].blocks");
        while (k < count_k) {
            json.K = k;
            blockType = json.StringOf("responses[i].fullTextAnnotation.pages[j].blocks[k].blockType");

            json1 = json.ObjectOf("responses[i].fullTextAnnotation.pages[j].blocks[k]");
            i1 = 0;
            count_i1 = json1.SizeOfArray("property.detectedLanguages");
            while (i1 < count_i1) {
                json1.I = i1;
                languageCode = json1.StringOf("property.detectedLanguages[i].languageCode");
                i1 = i1 + 1;
            }

            json1 = json.ObjectOf("responses[i].fullTextAnnotation.pages[j].blocks[k]");
            i1 = 0;
            count_i1 = json1.SizeOfArray("boundingBox.vertices");
            while (i1 < count_i1) {
                json1.I = i1;
                x = json1.IntOf("boundingBox.vertices[i].x");
                y = json1.IntOf("boundingBox.vertices[i].y");
                i1 = i1 + 1;
            }

            json1 = json.ObjectOf("responses[i].fullTextAnnotation.pages[j].blocks[k]");
            i1 = 0;
            count_i1 = json1.SizeOfArray("paragraphs");
            while (i1 < count_i1) {
                json1.I = i1;
                j1 = 0;
                count_j1 = json1.SizeOfArray("paragraphs[i].property.detectedLanguages");
                while (j1 < count_j1) {
                    json1.J = j1;
                    languageCode = json1.StringOf("paragraphs[i].property.detectedLanguages[j].languageCode");
                    j1 = j1 + 1;
                }

                j1 = 0;
                count_j1 = json1.SizeOfArray("paragraphs[i].boundingBox.vertices");
                while (j1 < count_j1) {
                    json1.J = j1;
                    x = json1.IntOf("paragraphs[i].boundingBox.vertices[j].x");
                    y = json1.IntOf("paragraphs[i].boundingBox.vertices[j].y");
                    j1 = j1 + 1;
                }

                j1 = 0;
                count_j1 = json1.SizeOfArray("paragraphs[i].words");
                while (j1 < count_j1) {
                    json1.J = j1;
                    k1 = 0;
                    count_k1 = json1.SizeOfArray("paragraphs[i].words[j].property.detectedLanguages");
                    while (k1 < count_k1) {
                        json1.K = k1;
                        languageCode = json1.StringOf("paragraphs[i].words[j].property.detectedLanguages[k].languageCode");
                        k1 = k1 + 1;
                    }

                    k1 = 0;
                    count_k1 = json1.SizeOfArray("paragraphs[i].words[j].boundingBox.vertices");
                    while (k1 < count_k1) {
                        json1.K = k1;
                        x = json1.IntOf("paragraphs[i].words[j].boundingBox.vertices[k].x");
                        y = json1.IntOf("paragraphs[i].words[j].boundingBox.vertices[k].y");
                        k1 = k1 + 1;
                    }

                    k1 = 0;
                    count_k1 = json1.SizeOfArray("paragraphs[i].words[j].symbols");
                    while (k1 < count_k1) {
                        json1.K = k1;
                        text = json1.StringOf("paragraphs[i].words[j].symbols[k].text");
                        propertyDetectedBreakType = json1.StringOf("paragraphs[i].words[j].symbols[k].property.detectedBreak.type");

                        json2 = json1.ObjectOf("paragraphs[i].words[j].symbols[k]");
                        i2 = 0;
                        count_i2 = json2.SizeOfArray("property.detectedLanguages");
                        while (i2 < count_i2) {
                            json2.I = i2;
                            languageCode = json2.StringOf("property.detectedLanguages[i].languageCode");
                            i2 = i2 + 1;
                        }

                        json2 = json1.ObjectOf("paragraphs[i].words[j].symbols[k]");
                        i2 = 0;
                        count_i2 = json2.SizeOfArray("boundingBox.vertices");
                        while (i2 < count_i2) {
                            json2.I = i2;
                            x = json2.IntOf("boundingBox.vertices[i].x");
                            y = json2.IntOf("boundingBox.vertices[i].y");
                            i2 = i2 + 1;
                        }

                        k1 = k1 + 1;
                    }

                    j1 = j1 + 1;
                }

                i1 = i1 + 1;
            }

            k = k + 1;
        }

        j = j + 1;
    }

    i = i + 1;
}

Debug.WriteLine("Success.");

 

© 2000-2019 Chilkat Software, Inc. All Rights Reserved.