missing PacketDelay in Gentl with Lucid Camera

Hi,

I am able to run Lucid vision camera using Gentl driver.

however, I am not seeing the field 'PacketDelay' in the src structure.

On Lucid software, i can set this using parameter called 'Stream transmission delay'

That is set to 0, and the image looks garbled and broken. I have to set a delay to make it work.

But in Matlab I have no such option

Is there any way I can get this variable to show up on the matlab video object?

I have reached out to the vendor but I am told this is Matlab issue

Is this something in the API that I need to change?

Any help is appreciated

Answer 1

[gujax]

Bump?

I have more information...

Lucid team identified a problem with Matlab reading LUCID camera features. They have done the following steps:

- performed test with the latest version of Matlab:

imaqhwinfo

ans =

struct with fields:

InstalledAdaptors: {'gentl' 'gige'}

MATLABVersion: '9.13 (R2022b)'

ToolboxName: 'Image Acquisition Toolbox'

ToolboxVersion: '6.7 (R2022b)'

- using Matlab's gige AND gentl adapter:

Matlab gige adapter does not seem to read any camera node names starting with Gev including GevSCFTD, and incorrectly parses several Stream Channel nodes (highlighted in bold).

>> vid = videoinput("gige", "1", "Mono8")

>> src = getselectedsource(vid)

src =

Display Summary for Video Source Object:

General Settings:

Parent = [1x1 videoinput]

Selected = on

SourceName = input1

Tag = [0x0 string]

Type = videosource

Device Specific Properties:

AcquisitionBurstFrameCount = 1

AcquisitionFrameCount = 1

AcquisitionFrameRate = 270.9293

(...)

LineStatusAll = 12

LinkUpTime = 1455

N1 = 0

N1049 = 25.928

N1059 = 3674.16

N1061 = (Currently not accessible)

N1071 = (Currently not accessible)

N480 = 0.02

N481 = 0

N482 = 0

N483 = 65535

N484 = 1

N485SK = 0

N486 = 1

N487 = 1

N488 = 0

PacketDelay = 80

PacketResendWindowFrameCount = 4

(...)

____________________________

Matlab GenTL consumer does not seem to read any camera node names starting with Gev including GevSCFTD, and incorrectly parses several Stream Channel nodes (highlighted in bold)

>> vid = videoinput("gentl", "1", "Mono8")

>> src = getselectedsource(vid)

src =

Display Summary for Video Source Object:

General Settings:

Parent = [1x1 videoinput]

Selected = on

SourceName = 0

Tag = [0x0 string]

Type = videosource

Device Specific Properties:

AcquisitionBurstFrameCount = 1

AcquisitionFrameCount = 1

(...)

LineStatusAll = 12

LinkUpTime = 2342

N1 = 0

N1049 = 25.928

N1059 = 3674.16

N1061 = (Currently not accessible)

N1071 = (Currently not accessible)

N480 = 0.02

N481 = 0

N482 = 0

N483 = 65535

N484 = 1

N485SK = 0

N486 = 1

N487 = 1

N488 = 0

PacketResendWindowFrameCount = 4

PhysicalPixelSize = 6.9

(...)

- tried to reproduce the issue accessing and parsing LUCID XML on other third-party software, such as NI Max, Matrox, Peora without issues.

I hope this gets fixed.