C#

C# APIs.

To use the engines, Linked together the library 'EvoCSAPI.dll'. For its path, refer to SDK contents.

Example for Snapshot Engine

using System;
using System.Text;
using System.Drawing;
using System.Diagnostics;
 
using Evo;
 
 
namespace SampleSSE
{
    using EvoRC = System.Int32; // Return Code
    using EvoObjID = System.Int32; // Object ID
 
    class Program
    {
        static void Main(string[] args)
        {
            string dataDir = null; // SDK's Data Directory Path
            string imgPath = null; // Input Image File Path
 
            if (args.Length < 1)
            {
                Console.WriteLine("Usage: SampleSSE [sdk_data_dir] image_file");
                return;
            }
            else if (args.Length == 1)
            { 
                imgPath = args[1];
            }
            else
            {
                dataDir = args[0];
                imgPath = args[1];
            }
 
            EvoRC rc;
            EvoObjID idDDI = -1; // DDI Object ID.
                                 // Must be set to negative number.
 
            // 1. Initialize the Evo engine library. Optionally can get DDI object.
            rc = Evo.Func.Initialize(null, dataDir, out idDDI);
            Debug.Assert(rc == 0);
 
            // [+] Optionally examine the DDI.
            uint numDev;
 
            // Get total number of available DNN devices.
            rc = Evo.DDI.GetNumDev(idDDI, out numDev); 
            Debug.Assert(rc == 0);
 
            Console.WriteLine("<< DNN Device Information >>");
 
            for (uint i = 0; i < numDev; i++)
            {
                StringBuilder buf = new StringBuilder(128);
 
                // At first, select a specific device.
                rc = Evo.DDI.SelectDev(idDDI, i);
                Debug.Assert(rc == 0);
 
                // Get ID of the selected DNN device.
                rc = Evo.DDI.GetDevID(idDDI, buf);
                Debug.Assert(rc == 0);
 
                Console.WriteLine("  ID: " + buf);
 
                // Get full name of the selected DNN device.
                rc = Evo.DDI.GetFullName(idDDI, buf);
                Debug.Assert(rc == 0);
 
                Console.WriteLine("  Full Name: " + buf);
 
                if (i < (numDev - 1))
                    Console.WriteLine("-----------------------------------------");
            }
 
            Console.WriteLine();
 
            // Must release the DDI context.
            Evo.Func.FreeObj(ref idDDI);
            // [-]
 
            EvoObjID idSSE; // Snapshot Engine object ID
 
            // 2. Create a Snapshot Engine.
            idSSE = Evo.SSEngine.Create();
            Debug.Assert(idSSE >= 0);
            
            // 3. Initialize the engine.
            rc = Evo.SSEngine.Init(idSSE, "KOR", null);
            Debug.Assert(rc == 0);
            
            // [+] 4. If required, set or get engine parameters of interest.
            Evo.Rect searchRect = new Evo.Rect();
 
            rc = Evo.Engine.GetParamSearchRect(idSSE, out searchRect);
            Debug.Assert(rc == 0);
 
            //searchRect.x = 0;
            //searchRect.y = 0;
            searchRect.width = 0;
            searchRect.height = 0;
 
            rc = Evo.Engine.SetParamSearchRect(idSSE, in searchRect);
            Debug.Assert(rc == 0);
            // [-]
 
            //
            // Repeat the stpes 5 ~ 6.
            //
 
            EvoObjID idLPI;
 
            // 5. Run the engine with input image.
            idLPI = Evo.SSEngine.Run(idSSE, imgPath);
            rc = Evo.Func.GetLastRC();
            Debug.Assert(rc == 0);
 
            // In case any license plate was found.
            if (idLPI >= 0)
            {
                uint num;
 
                //
                // 6. Examine the LPI context.
                //
 
                // Get total number of the detected license plates.
                rc = Evo.LPI.GetNumLP(idLPI, out num);
                Debug.Assert(rc == 0);
                
                for (uint i = 0; i < num; i++)
                {
                    Evo.Rect bbox;
                    int type;
                    uint len;
                    float confidence;
                    float[] bufCC = new float[20]; // Buffer of Character Confidences
                    StringBuilder bufStr = new StringBuilder(512);
 
                    // At first, select a specific device.
                    rc = Evo.LPI.SelectLP(idLPI, i);
                    Debug.Assert(rc == 0);
 
                    // Get text string.
                    rc = Evo.LPI.GetStr(idLPI, bufStr);
                    Debug.Assert(rc == 0);
 
                    Console.WriteLine("\n{0}", bufStr.ToString());
 
                    // Get character confidences.
                    len = (uint)bufCC.Length;
                    rc = Evo.LPI.GetCharConf(idLPI, bufCC, ref len);
                    Debug.Assert(rc == 0);
 
                    Console.Write(" --> Char Confidences: ");
                    for (uint j = 0; j < len; j++)
                        Console.Write("{0}% ", bufCC[j]);
                    Console.WriteLine();
 
                    // Get the bounding box.
                    rc = Evo.LPI.GetPos(idLPI, out bbox);
                    Debug.Assert(rc == 0);
 
                    Console.WriteLine(" --> Position: {0}, {1}, {2}, {3}", bbox.x, bbox.y, bbox.width, bbox.height);
 
                    // Get the type and its confidence.
                    rc = Evo.LPI.GetType(idLPI, out type, out confidence);
                    Debug.Assert(rc == 0);
 
                    Console.WriteLine(" --> Type: {0} ({1}%)", type, confidence);
                }
 
                // Must release the LPI object.
                Evo.Func.FreeObj(ref idLPI);
                Debug.Assert(idLPI < 0);
            }
 
            // 7. Deinitialize the engine.
            Evo.SSEngine.Deinit(idSSE);
 
            // 8. Destroy the engine.
            Evo.Func.FreeObj(ref idSSE);
            Debug.Assert(idSSE < 0);
        }
    }
}

Example for Triggered Snapshot Engine

using System;
using System.Text;
using System.Timers;
using System.Drawing;
using System.Threading;
using System.Diagnostics;
 
using Evo;
 
 
namespace SampleTSSE
{
    using EvoRC = System.Int32; // Return Code
    using EvoObjID = System.Int32; // Object ID
 
    class Program
    {
        private static System.Timers.Timer timer;
 
        private static string imgDir = null; // Directory for the mages to be saved.
        private static EvoObjID idTSSE = -1; // Triggered Snapshot Engine object ID
 
        private static void OnTimerHandler(Object source, ElapsedEventArgs e)
        {
            EvoRC rc;
            long time;
            EvoObjID idLPI; // LPI object ID
            EvoObjID idPic = -1; // Picture object ID.
                                 // Must be set to negative number.
 
            idLPI = Evo.TSSEngine.Trigger(idTSSE, out idPic);
            rc = Evo.Func.GetLastRC();
 
            if (rc != 0) // When errors occur.
            {
                Debug.Assert(idLPI < 0 && idPic < 0);
 
                if (rc == 60) // When the video stream has been closed.
                {
                    Console.WriteLine("The video stream closed.");
                    return;
                }
                else
                {
                    Debug.Assert(false);
                }
            }
 
            if (idLPI >= 0)
            {
                uint numLPs;
 
                // Get total number of the detected license plates.
                rc = Evo.LPI.GetNumLP(idLPI, out numLPs);
                Debug.Assert(rc == 0);
 
                for (uint i = 0; i < numLPs; i++)
                {
                    Evo.Rect bbox;
                    int type;
                    float confidence;
                    StringBuilder buf = new StringBuilder(512);
 
                    // At first, select the required LP.
                    rc = Evo.LPI.SelectLP(idLPI, i);
                    Debug.Assert(rc == 0);
 
                    // Get text string.
                    rc = Evo.LPI.GetStr(idLPI, buf);
                    Debug.Assert(rc == 0);
 
                    Console.WriteLine("\n{0}", buf.ToString());
 
                    // Get the bounding box.
                    rc = Evo.LPI.GetPos(idLPI, out bbox);
                    Debug.Assert(rc == 0);
 
                    Console.WriteLine(" --> Position: {0}, {1}, {2}, {3}", bbox.x, bbox.y, bbox.width, bbox.height);
 
                    // Get the type and its confidence.
                    rc = Evo.LPI.GetType(idLPI, out type, out confidence);
                    Debug.Assert(rc == 0);
 
                    Console.WriteLine(" --> Type: {0} ({1}%)", type, confidence);
                }
 
                // Must release the LPI object.
                Evo.Func.FreeObj(ref idLPI);
                Debug.Assert(idLPI < 0);
            }
 
            //
            // TimeUnit 
            //    0 : Second Unit
            //    1 : Millisecond Unit
            //
            rc = Evo.Picture.GetTime(idPic, out time);
            Debug.Assert(rc == 0);
 
            rc = Evo.Picture.SaveInJPEG(idPic, imgDir + String.Format("\\{0}.jpg", time));
            Debug.Assert(rc == 0);
 
            // Must release the Picture object.
            Evo.Func.FreeObj(ref idPic);
            Debug.Assert(idPic < 0);
        }
 
        static void Main(string[] args)
        {
            string dataDir = null; // SDK's Data Directory Path
            string url = null; // Video Source URL
 
            if (args.Length < 2)
            {
                Console.WriteLine("Usage: SampleTSSE [sdk_data_dir] video_source_url image_dir");
                return;
            }
            else if (args.Length == 2)
            {
                url = args[0];
                imgDir = args[1];
            }
            else
            {
                dataDir = args[0];
                url = args[1];
                imgDir = args[2];
            }
 
            int rc;
            EvoObjID idDDI = -1; // DDI Object ID.
                                 // Must be set to negative number.
 
            // 1. Initialize the Evo engine library. Optionally can get DDI context
            rc = Evo.Func.Initialize(null, dataDir, out idDDI);
            Debug.Assert(rc == 0 && idDDI >= 0);
 
            // [+] Optionally examine the DDI.
            uint numDev;
 
            // Get total number of available DNN devices.
            rc = Evo.DDI.GetNumDev(idDDI, out numDev); 
            Debug.Assert(rc == 0);
 
            Console.WriteLine("<< DNN Device Information >>");
 
            for (uint i = 0; i < numDev; i++)
            {
                StringBuilder buf = new StringBuilder(128);
 
                // At first, select the required device.
                rc = Evo.DDI.SelectDev(idDDI, i);
                Debug.Assert(rc == 0);
 
                // Get ID of the selected DNN device.
                rc = Evo.DDI.GetDevID(idDDI, buf);
                Debug.Assert(rc == 0);
 
                Console.WriteLine("  ID: " + buf);
 
                // Get full name of the selected DNN device.
                rc = Evo.DDI.GetFullName(idDDI, buf);
                Debug.Assert(rc == 0);
 
                Console.WriteLine("  Full Name: " + buf);
 
                if (i < (numDev - 1))
                    Console.WriteLine("-----------------------------------------");
            }
 
            Console.WriteLine();
 
            // Must release the DDI context.
            Evo.Func.FreeObj(ref idDDI);
            Debug.Assert(idDDI < 0);
            // [-]
 
            // 2. Create a Triggered Snapshot Engine.
            idTSSE = Evo.TSSEngine.Create();
            Debug.Assert(idTSSE >= 0);
 
            // 3. Initialize the engine with video source URL or GenICam device.
            rc = Evo.TSSEngine.Init(idTSSE, "KOR", null, url);
            Debug.Assert(rc == 0);
            
            // [+] 4. If required, set or get engine parameters of interest.
            Evo.Rect searchRect = new Evo.Rect();
 
            rc = Evo.Engine.GetParamSearchRect(idTSSE, out searchRect);
            Debug.Assert(rc == 0);
 
            //searchRect.x = 0;
            //searchRect.y = 0;
            searchRect.width = 0;
            searchRect.height = 0;
 
            rc = Evo.Engine.SetParamSearchRect(idTSSE, in searchRect);
            Debug.Assert(rc == 0);
            // [-]
 
            int total = 5;
 
            // Setup timer to emulate the trigger event.
            timer = new System.Timers.Timer(1000);
            timer.Elapsed += OnTimerHandler;
            timer.AutoReset = true;
            timer.Enabled = true;
 
            for (int num = 0; num < total; num++)
            {
                Thread.Sleep(1000);
            }
 
            timer.Enabled = false;
            Thread.Sleep(1500); // To gurantee for the timer handler to terminate safely.
 
            // 5. Deinitialize the engine.
            Evo.TSSEngine.Deinit(idTSSE);
            
            // 6. Destroy the engine.
            Evo.Func.FreeObj(ref idTSSE);
            Debug.Assert(idTSSE < 0);
        } // Main()
    } // Program class
}

Example for Fully Automatic Video Engine

using System;
using System.Text;
using System.Timers;
using System.Drawing;
using System.Threading;
using System.Diagnostics;
 
using Evo;
 
 
namespace SampleFAVE
{
    using EvoRC = System.Int32; // Return Code
    using EvoObjID = System.Int32; // Object ID
 
    class Program
    {
        private static string imgDir = null; // Directory for the mages to be saved.
 
        private static void HandleResult(EvoObjID idLPI, EvoObjID idGOP)
        {
            EvoRC rc;
            uint numLPs;
 
            // In case of FAVEngine, always return LPI with single element.
            rc = Evo.LPI.GetNumLP(idLPI, out numLPs);
            Debug.Assert(rc == 0 && numLPs == 1);
 
            int type;
            uint numPic;
            int heading;
            float confidence;
            StringBuilder buf = new StringBuilder(512);
 
            // Get text string.
            rc = Evo.LPI.GetStr(idLPI, buf);
            Debug.Assert(rc == 0);
 
            Console.WriteLine("String: {0}", buf.ToString());
 
            // Get the type and its confidence.
            rc = Evo.LPI.GetType(idLPI, out type, out confidence);
            Debug.Assert(rc == 0);
 
            Console.WriteLine("Type: {0} ({1}%)", type, confidence);
 
            // Get number of pictures
            rc = Evo.GOP.GetNumPic(idGOP, out numPic);
            Debug.Assert(rc == 0);
 
            for (uint i = 0; i < numPic; i++)
            {
                long time;
                Evo.Rect bbox;
                DateTimeOffset date;
 
                // At first, select a specific picture.
                rc = Evo.GOP.SelectPic(idGOP, i);
                Debug.Assert(rc == 0);
 
                // Get the bounding box of each picture.
                rc = Evo.GOP.GetPos(idGOP, out bbox);
                Debug.Assert(rc == 0);
 
                Console.WriteLine("Position: {0}, {1}, {2}, {3}", bbox.x, bbox.y, bbox.width, bbox.height);
 
                //
                // Get time of each picture.
                //
                // TimeUnit 
                //    0 : Second Unit
                //    1 : Millisecond Unit
                //
                rc = Evo.GOP.GetPicTime(idGOP, out time);
                Debug.Assert(rc == 0);
 
                date = DateTimeOffset.FromUnixTimeMilliseconds(time).ToLocalTime();
                Console.WriteLine(date.ToString());
            }
 
            // Get the heading direction of automobile.
            rc = Evo.GOP.GetHeadDir(idGOP, out heading);
 
            Console.WriteLine("Heading Direction: {0}", heading);
 
            Console.WriteLine();
 
            if (numPic < 2)
                rc = Evo.GOP.SavePicInJPEG(idGOP, imgDir + String.Format("\\{0}.jpg", buf.ToString()));
            else
                rc = Evo.GOP.SaveAllInTIFF(idGOP, imgDir + String.Format("\\{0}.tiff", buf.ToString()));
            Debug.Assert(rc == 0);
        }
 
        public class GenICam
        {
            public EvoObjID idAdmin; // GenICam Administrator object ID
            public EvoObjID idDev; // GenICam Device object ID 
 
            public GenICam()
            {
                idAdmin = -1;
                idDev = -1;
            }
        }
        static void Main(string[] args)
        {
            string viType; // Video Input Type, 'IPProto' or 'GenICam'.
            string dataDir = null; // SDK's Data Directory Path
            //string url = "rtsp://192.168.1.100/media.smp";
            string url = "F:\\Temp1\\2014-11-24_.mkv";
            GenICam gic = new GenICam();
 
            if (args.Length < 2)
            {
                Console.WriteLine("Usage: SampleFAVE [SDK_Data_Dir] Video_Input_Type Image_Dir");
                return;
            }
            else if (args.Length == 2)
            {
                viType = args[0];
                imgDir = args[1];
            }
            else
            {
                dataDir = args[0];
                viType = args[1];
                imgDir = args[2];
            }
 
            EvoRC rc;
            EvoObjID idDDI = -1; // DDI object ID.
                                 // Must be set to negative number.
 
            // 1. Initialize the Evo engine library. Optionally get DDI object.
            rc = Evo.Func.Initialize(null, dataDir, out idDDI);
            Debug.Assert(rc == 0 && idDDI >= 0);
 
            // [+] Optionally examine the DDI.
            uint numDev;
 
            // Get total number of available DNN devices.
            rc = Evo.DDI.GetNumDev(idDDI, out numDev); 
            Debug.Assert(rc == 0);
 
            Console.WriteLine("<< DNN Device Information >>");
 
            for (uint i = 0; i < numDev; i++)
            {
                StringBuilder buf = new StringBuilder(128);
 
                // At first, select a specific device
                rc = Evo.DDI.SelectDev(idDDI, i);
                Debug.Assert(rc == 0);
 
                // Get ID of the selected device.
                rc = Evo.DDI.GetDevID(idDDI, buf);
                Debug.Assert(rc == 0);
 
                Console.WriteLine("  ID: " + buf);
 
                // Get full name of the selected DNN device.
                rc = Evo.DDI.GetFullName(idDDI, buf);
                Debug.Assert(rc == 0);
 
                Console.WriteLine("  Full Name: " + buf);
 
                if (i < (numDev - 1))
                    Console.WriteLine("-----------------------------------------");
            }
 
            Console.WriteLine();
 
            // Must release the DDI object.
            Evo.Func.FreeObj(ref idDDI);
            Debug.Assert(idDDI < 0);
            // [-]
 
            if (viType == "GenICam")
            {
                gic.idAdmin = Evo.GIC.Admin.Get();
                Debug.Assert(gic.idAdmin >= 0);
 
                rc = Evo.GIC.Admin.UpdateDevList(gic.idAdmin);
                Debug.Assert(rc == 0);
 
                rc = Evo.GIC.Admin.GetNumDev(gic.idAdmin, out numDev);
                Debug.Assert(rc == 0);
 
                if (numDev <= 0)
                {
                    // Must release the administrator object.
                    Evo.Func.FreeObj(ref gic.idAdmin);
                    Debug.Assert(gic.idAdmin < 0);
 
                    return;
                }
                else
                {
                    uint numDS;
 
                    for (uint i = 0; i < numDev; i++)
                    {
                        StringBuilder strBuf = new StringBuilder(100);
 
                        rc = Evo.GIC.Admin.SelectDev(gic.idAdmin, i);
                        Debug.Assert(rc == 0);
 
                        Console.WriteLine("[Current Device: {0}]", i);
 
                        rc = Evo.GIC.Admin.GetDevIfc(gic.idAdmin, strBuf);
                        Debug.Assert(rc == 0);
                        Console.WriteLine("Interface: {0}", strBuf.ToString());
 
                        rc = Evo.GIC.Admin.GetDevVendor(gic.idAdmin, strBuf);
                        Debug.Assert(rc == 0);
                        Console.WriteLine("Vendor: {0}", strBuf.ToString());
 
                        rc = Evo.GIC.Admin.GetDevModel(gic.idAdmin, strBuf);
                        Debug.Assert(rc == 0);
                        Console.WriteLine("Model: {0}", strBuf.ToString());
 
                        rc = Evo.GIC.Admin.GetDevSerialNo(gic.idAdmin, strBuf);
                        Debug.Assert(rc == 0);
                        Console.WriteLine("SerialNo: {0}", strBuf.ToString());
 
                        rc = Evo.GIC.Admin.GetDevID(gic.idAdmin, strBuf);
                        Debug.Assert(rc == 0);
                        Console.WriteLine("ID: {0}", strBuf.ToString());
                    }
 
                    Console.WriteLine();
 
                    rc = Evo.GIC.Admin.SelectDev(gic.idAdmin, 0);
                    Debug.Assert(rc == 0);
 
                    gic.idDev = Evo.GIC.Admin.OpenDev(gic.idAdmin);
                    Debug.Assert(gic.idDev >= 0);
 
                    rc = Evo.GIC.Dev.GetNumDataStreams(gic.idDev, out numDS);
                    Debug.Assert(rc == 0);
 
                    if (numDS > 0)
                        Console.WriteLine("Number of data streams: {0}", numDS);
                    else
                    {
                        // Must release the GenICam objects.
                        Evo.Func.FreeObj(ref gic.idDev); // At first, release the device object.
                        Evo.Func.FreeObj(ref gic.idAdmin);
                        Debug.Assert(gic.idDev < 0 && gic.idDev < 0);
 
                        return;
                    }
                }
            }
 
            // [+] 2. Create a Fully Automatic Video Engine.
            EvoObjID idFAVE = -1;
 
            idFAVE = Evo.FAVEngine.Create();
            Debug.Assert(idFAVE >= 0);
            // [-]
 
            // 3. Initialize the engine with video source URL or GenICam device.
            if (viType == "IPProto")
                rc = Evo.FAVEngine.Init(idFAVE, "KOR", null, url);
            else
                rc = Evo.FAVEngine.Init(idFAVE, "KOR", null, gic.idDev, 0);
            Debug.Assert(rc == 0);
 
            // [+] 4. If required, set or get engine parameters of interest.
            Evo.Output output = new Evo.Output();
 
            rc = Evo.Engine.GetParamOutput(idFAVE, out output);
            Debug.Assert(rc == 0);
 
            output.headDir = 1;
 
            rc = Evo.Engine.SetParamOutput(idFAVE, in output);
            Debug.Assert(rc == 0);
 
            rc = Evo.Engine.SetParamGOPSize(idFAVE, 1);
            Debug.Assert(rc == 0);
            // [-]
 
            // 5. Get the LPI and GOP objects.
            for (int num = 0; num < 3; num++)
            {
                EvoObjID idLPI;
                EvoObjID idGOP = -1; // Must be negative number.
 
                idLPI = Evo.FAVEngine.PopLPI(idFAVE, out idGOP);
 
                // When errors occured.
                if (idLPI < 0 && idGOP < 0)
                {
                    // The video stream has been closed.
                    if (Evo.Func.GetLastRC() == 60)
                        Console.WriteLine("The video stream closed.");
 
                    break;
                }
 
                Debug.Assert(idLPI >=0 && idGOP >= 0);
 
                HandleResult(idLPI, idGOP);
 
                // Must release the 'LPI' and 'GOP' objects.
                Evo.Func.FreeObj(ref idLPI);
                Evo.Func.FreeObj(ref idGOP);
                Debug.Assert(idLPI < 0 && idGOP < 0);
            }
 
            // 6. Deinitialize the engine object.
            Evo.FAVEngine.Deinit(idFAVE);
 
            // 7. Destroy the engine object.
            Evo.Func.FreeObj(ref idFAVE);
            Debug.Assert(idFAVE < 0);
 
            if (viType == "GenICam")
            {
                // Must release the GenICam objects.
                Evo.Func.FreeObj(ref gic.idDev); // At first, release the device object.
                Evo.Func.FreeObj(ref gic.idAdmin);
                Debug.Assert(gic.idDev < 0 && gic.idDev < 0);
            }
        } // Main()
    } // Program class
}

Example for camera calibration

using System;
using System.Text;
using System.Drawing;
using System.Diagnostics;
 
using Evo;
 
 
namespace SampleCamCalib
{
    using EvoRC = System.Int32; // Return Code
    using EvoObjID = System.Int32; // Object ID
 
    class Program
    {
        static void Main(string[] args)
        {
            string dataDir = null; // SDK's Data Directory Path
            string ccName = null; // Camera Calibration Name
            string imgPath = null; // Input Image File Path
 
            if (args.Length < 2)
            {
                Console.WriteLine("Usage: SampleCamModel [sdk_data_dir] camera_calib_name image_file");
                return;
            }
            else if (args.Length == 2)
            {
                ccName  = args[0];
                imgPath = args[1];
            }
            else
            {
                dataDir = args[0];
                ccName  = args[1];
                imgPath = args[2];
            }
 
            EvoRC rc;
            EvoObjID idSSE = -1;
            EvoObjID idFisheyeModel = -1; // Fisheye Camera Model
 
            // 1. Initialize Evo engine library.
            rc = Evo.Func.Initialize("latency", dataDir);
            Debug.Assert(rc == 0);
 
            // 2. Create fisheye camera model.
            idFisheyeModel = Evo.CC.Fisheye.Create(ccName);
            Debug.Assert(idFisheyeModel >= 0);
 
            // 3. Create a Snapshot Engine.
            idSSE = Evo.SSEngine.Create();
            Debug.Assert(idSSE >= 0);
            
            // 4. Initialize the engine.
            rc = Evo.SSEngine.Init(idSSE, "KOR", "FP32:CPU");
            Debug.Assert(rc == 0);
 
            EvoObjID idLPI = -1;
            EvoObjID idPic = -1;
            Evo.Image img = new Evo.Image();
 
            //
            // If there are more input images, repeat the stpes 5 ~ 8.
            //
 
            // 5. Get rectified image.
            idPic = Evo.CC.Fisheye.Rectify(idFisheyeModel, imgPath);
            Debug.Assert(idPic >= 0);
 
            // 6. [+] Run the engine with the rectified image.
            rc = Evo.Picture.GetImage(idPic, out img);
            Debug.Assert(rc == 0);
 
            idLPI = Evo.SSEngine.Run(idSSE, in img);
            rc = Evo.Func.GetLastRC();
            Debug.Assert(rc == 0);
            // [-]
 
            // In case any license plate was found.
            if (idLPI >= 0)
            {
                uint num;
 
                //
                // 7. Examine the LPI context.
                //
 
                // Get total number of the detected license plates.
                rc = Evo.LPI.GetNumLP(idLPI, out num);
                Debug.Assert(rc == 0);
                
                for (uint i = 0; i < num; i++)
                {
                    Evo.Rect bbox;
                    int type;
                    uint len;
                    float confidence;
                    float[] bufCC = new float[20]; // Buffer of Character Confidences
                    StringBuilder strBuf = new StringBuilder(512);
 
                    // At first, select a specific LP.
                    rc = Evo.LPI.SelectLP(idLPI, i);
                    Debug.Assert(rc == 0);
 
                    // Get text string.
                    rc = Evo.LPI.GetStr(idLPI, strBuf);
                    Debug.Assert(rc == 0);
 
                    Console.WriteLine("\n{0}", strBuf.ToString());
 
                    // Get character confidences.
                    len = (uint)bufCC.Length;
                    rc = Evo.LPI.GetCharConf(idLPI, bufCC, ref len);
                    Debug.Assert(rc == 0);
 
                    Console.Write(" --> Char Confidences: ");
                    for (uint j = 0; j < len; j++)
                        Console.Write("{0}% ", bufCC[j]);
                    Console.WriteLine();
 
                    // Get the bounding box.
                    rc = Evo.LPI.GetPos(idLPI, out bbox);
                    Debug.Assert(rc == 0);
 
                    Console.WriteLine(" --> Position: {0}, {1}, {2}, {3}", bbox.x, bbox.y, bbox.width, bbox.height);
 
                    // Get the type and its confidence.
                    rc = Evo.LPI.GetType(idLPI, out type, out confidence);
                    Debug.Assert(rc == 0);
 
                    Console.WriteLine(" --> Type: {0} ({1}%)", type, confidence);
                }
 
                // Must release the LPI context.
                Evo.Func.FreeObj(ref idLPI);
                Debug.Assert(idLPI < 0);
            }
 
            // If required, save the rectified image.
            rc = Evo.Picture.SaveInJPEG(idPic, "rectified_image.jpg");
            Debug.Assert(rc == 0);
 
            // 8. Release the rectified image.
            Evo.Func.FreeObj(ref idPic);
            Debug.Assert(idPic < 0);
 
            // 9. Deinitialize the engine.
            Evo.SSEngine.Deinit(idSSE);
 
            // 10. Destroy the engine.
            Evo.Func.FreeObj(ref idSSE);
            Debug.Assert(idSSE < 0);
 
            // 11. Destory the camera model.
            Evo.Func.FreeObj(ref idFisheyeModel);
            Debug.Assert(idFisheyeModel < 0);
        }
    }
}