public async Task <CameraImage> AcquireImageAsync(AcquireParams acquireParams,
CancellationToken ct, IProgress <CameraProgressEventArgs> progress = null)
{
var takeParams = new TakeParams(
acquireParams.ExposureType,
acquireParams.ExposureTime,
acquireParams.AnalogGain,
acquireParams.MinGain,
acquireParams.MaxGain
);
var takeProgress = new Progress <TakeProgressEventArgs>();
takeProgress.ProgressChanged += (s, e) =>
{
progress.Report(
new CameraProgressEventArgs(e.Percentage, e.Description)
);
};
return(new CameraImage()
{
Image = await _device.TakeImage(takeParams, ct, takeProgress),
ImageWidth = ImageWidth, ImageHeight = ImageHeight
});
}
private async Task CorrectGainAsync(TakeParams acquireParams)
{
//lower gain limit
var P1 = (int)acquireParams.MinGain;
//high gain limit
var P2 = acquireParams.MaxGain;
//from props.txt
var gain = (P1 == 226) ? (2048 - 2048 * Math.Exp(-acquireParams.AnalogGain * Math.Log(10) / 20)) : (acquireParams.AnalogGain * 10 + P2);
//set gain, 131108 register from props.txt
var rez = await _cameraHelper.SetConfigRegisterAsync(131108, (int)gain);
gain = await _cameraHelper.GetBlocksSizeAsync(131108);
}
public async Task <ushort[, ]> TakeImage(
TakeParams acquireParams, CancellationToken ct, IProgress <TakeProgressEventArgs> progress = null)
{
if (!IsAttached)
{
throw new Exception("The camera has been disconnected");
}
try
{
bool success = false;
do
{
try
{
//Pixel format
var r1 = await _cameraHelper.SetConfigRegisterAsync(0x30024, 5);
success = true;
}
catch (Exception e)
{
Debug.WriteLine(e.Message);
throw;
}
} while (!success);
//set gain
await CorrectGainAsync(acquireParams);
//Get SBRM register
var sbrm = await _cameraHelper.GetRegisterValueAsync(0x001D8);
//Read SIRM register
var sirm = await _cameraHelper.GetRegisterValueAsync(sbrm + 0x0020);
//Get leader size.
var leaderSize = await _cameraHelper.GetBlocksSizeAsync(sirm + 0x10);
//Get trailer size
var trailerSize = await _cameraHelper.GetBlocksSizeAsync(sirm + 0x14);
//image width and height, registers from props.txt
var width = await _cameraHelper.GetBlocksSizeAsync(0x30204);
var height = await _cameraHelper.GetBlocksSizeAsync(0x30224);
//trigger_mode_off (on = 1), registers from props.txt
var rez = await _cameraHelper.SetConfigRegisterAsync(0x40104, 0);
//unknown register from WireShark dump
rez = await _cameraHelper.SetConfigRegisterAsync(0x40204, 0);
//acquisition mode, 0-single, 2-continue
rez = await _cameraHelper.SetConfigRegisterAsync(0x40004, 0);
//disable exposure
rez = await _cameraHelper.SetConfigRegisterAsync(sirm + 0x0004, 0);
//single payload size
rez = await _cameraHelper.SetConfigRegisterAsync(sirm + 0x001C, width *height);
//count of payload transmitions
rez = await _cameraHelper.SetConfigRegisterAsync(sirm + 0x0020, 4);
//max final payload transfer 1 size (value from WireShark dump)
rez = await _cameraHelper.SetConfigRegisterAsync(sirm + 0x0024, 206848);
//max final payload transfer 1 size (value from WireShark dump)
rez = await _cameraHelper.SetConfigRegisterAsync(sirm + 0x0028, 0);
//leader and trailer sizes
rez = await _cameraHelper.SetConfigRegisterAsync(sirm + 0x0018, leaderSize);
rez = await _cameraHelper.SetConfigRegisterAsync(sirm + 0x002c, trailerSize);
//exposure mode,registers from props.txt
//EnumEntry_ExposureMode_Timed = 1
//EnumEntry_ExposureMode_TriggerWidth = 2
rez = await _cameraHelper.SetConfigRegisterAsync(263172, 1);
//Exposure time, registers from props.txt
rez = await _cameraHelper.SetConfigRegisterAsync(263268, (int)(acquireParams.ExposureTime * 1000000));
await SetLaserState(0, acquireParams.ExposureType);
//enable exposure
rez = await _cameraHelper.SetConfigRegisterAsync(sirm + 0x0004, 1);
//start exposure
rez = await _cameraHelper.SetConfigRegisterAsync(0x40024, 0x01);
byte[] data = new byte[0];
var leader = await _cameraHelper.GetImageData();
while (data.Length < width * height * 2)
{
bool sucess = false;
do
{
try
{
data = ArrayHelper.ConcatArrays(data, await _cameraHelper.GetImageData());
success = true;
}
catch (Exception e)
{
Debug.WriteLine(e.Message);
throw;
}
} while (!success);
}
var trailer = await _cameraHelper.GetImageData();
//stop exposure
rez = await _cameraHelper.SetConfigRegisterAsync(0x40044, 0x01);
await SetLaserState(0, false);
ImageHeight = height; ImageWidth = width;
//return ArrayHelper.UnpackImage(data, width, height);
var imageU = new ushort[data.Length / 2];
// Copy single image.
Buffer.BlockCopy(data, 0, imageU, 0, data.Length);
// Average and scale.
for (var i = 0; i < imageU.Length; ++i)
{
if (imageU[i] * 16 <= ushort.MaxValue)
{
imageU[i] = (ushort)(imageU[i] * 16);
}
else
{
imageU[i] = ushort.MaxValue;
}
}
// Prepare visual informaition.
//FindMinMax(imageU);
//InsertHistogram(imageU, width, height);
//InsertSection(imageU, width, height, width * 3 / 8);
// Convert to two dimentional array.
var result = new ushort[height, width];
var offset = 0;
for (var i = 0; i < height; ++i)
{
for (var j = 0; j < width; ++j)
{
result[i, j] = imageU[offset++];
}
}
return(result);
}
catch (ArgumentException)
{
OnDisconnect();
return(null);
}
}
public async Task <ushort[, ]> TakeImage(
TakeParams acquireParams, CancellationToken ct, IProgress <TakeProgressEventArgs> progress = null)
{
if (!IsAttached)
{
throw new Exception("The camera has been disconnected");
}
try
{
//Pixel format
var rez = await _cameraHelper.SetConfigRegisterAsync(0x30024, 5);
//set gain
await CorrectGainAsync(acquireParams);
//Get SBRM register
var sbrm = await _cameraHelper.GetRegisterValueAsync(0x001D8);
//Read SIRM register
var sirm = await _cameraHelper.GetRegisterValueAsync(sbrm + 0x0020);
//Get leader size.
var leaderSize = await _cameraHelper.GetBlocksSizeAsync(sirm + 0x10);
//Get trailer size
var trailerSize = await _cameraHelper.GetBlocksSizeAsync(sirm + 0x14);
//image width and height, registers from props.txt
var width = await _cameraHelper.GetBlocksSizeAsync(0x30204);
var height = await _cameraHelper.GetBlocksSizeAsync(0x30224);
//trigger_mode_off (on = 1), registers from props.txt
rez = await _cameraHelper.SetConfigRegisterAsync(0x40104, 0);
//unknown register from WireShark dump
rez = await _cameraHelper.SetConfigRegisterAsync(0x40204, 0);
//acquisition mode, 0-single, 2-continue
rez = await _cameraHelper.SetConfigRegisterAsync(0x40004, 0);
//disable exposure
rez = await _cameraHelper.SetConfigRegisterAsync(sirm + 0x0004, 0);
//single payload size
rez = await _cameraHelper.SetConfigRegisterAsync(sirm + 0x001C, width *height);
//count of payload transmitions
rez = await _cameraHelper.SetConfigRegisterAsync(sirm + 0x0020, 4);
//max final payload transfer 1 size (value from WireShark dump)
rez = await _cameraHelper.SetConfigRegisterAsync(sirm + 0x0024, 206848);
//max final payload transfer 1 size (value from WireShark dump)
rez = await _cameraHelper.SetConfigRegisterAsync(sirm + 0x0028, 0);
//leader and trailer sizes
rez = await _cameraHelper.SetConfigRegisterAsync(sirm + 0x0018, leaderSize);
rez = await _cameraHelper.SetConfigRegisterAsync(sirm + 0x002c, trailerSize);
//exposure mode,registers from props.txt
//EnumEntry_ExposureMode_Timed = 1
//EnumEntry_ExposureMode_TriggerWidth = 2
rez = await _cameraHelper.SetConfigRegisterAsync(263172, 1);
//Exposure time, registers from props.txt
rez = await _cameraHelper.SetConfigRegisterAsync(263268, (int)acquireParams.ExposureTime);
//enable exposure
rez = await _cameraHelper.SetConfigRegisterAsync(sirm + 0x0004, 1);
//start exposure
rez = await _cameraHelper.SetConfigRegisterAsync(0x40024, 0x01);
byte[] data = new byte[0];
var leader = await _cameraHelper.GetImageData();
while (data.Length < width * height * 2)
{
data = ArrayHelper.ConcatArrays(data, await _cameraHelper.GetImageData());
}
var trailer = await _cameraHelper.GetImageData();
//stop exposure
rez = await _cameraHelper.SetConfigRegisterAsync(0x40044, 0x01);
ImageHeight = height; ImageWidth = width;
return(ArrayHelper.UnpackImage(data, width, height));
}
catch (ArgumentException)
{
OnDisconnect();
return(null);
}
}