U16 image anomaly in Imaq Vision Image Container

[DonRothGE]

Anyone seen this type of anomaly and know of a workaround.  What is weird is I have not seen in consistently.  Image shows up correctly in ImageJ.

[ChristopheC]

The image display control allows you to set the mapping for displaying 16-bit images.

Right click on the control and select 16-Bit Display Mapping.

Select the mapping that is appropriate for you image. For better results, if the bit-depth is not set in your file, you might want to set it using IMAQ Image Bit Depth to specify the correct bit depth (10 instead of 16 for example).

[DonRothGE]

Here is the info for the U16 image from ImageJ Image 'Show Info' menu item.   No adjustments in mapping, including changing the display range, changed anything.

SCIFIO version: 0.15.4
File format: Tagged Image File Format
--- Dataset Information ---
BitsPerPixel = 16
PixelType = 3
Dataset name = TOP VIEW TIFS\54_TOP_0534.tif
Image 0 Information
Dimension order = X,Y
Dimension lengths = 1658,1631
--- Global Metadata ---
BitsPerSample = 16
CellLength = -1
CellWidth = -1
Compression = PackBits
DotRange = -1
ExtraSamples = -1
FreeByteCounts = -1
FreeOffsets = -1
GrayResponseCurve = -1
GrayResponseUnit = -1
HalftoneHints = -1
ImageLength = 1631
ImageWidth = 1658
InkNames = -1
JPEGACTables = -1
JPEGDCTables = -1
JPEGInterchangeFormat = -1
JPEGLosslessPredictors = -1
JPEGPointTransforms = -1
JPEGQTables = -1
JPEGRestartInterval = -1
Make = -1
MaxSampleValue = -1
MetaDataPhotometricInterpretation = Monochrome
MetaMorph = no
MinSampleValue = -1
Model = -1
NumberOfChannels = 1
NumberOfInks = -1
PageNumber = -1
PhotometricInterpretation = BlackIsZero
PlanarConfiguration = Chunky
PrimaryChromacities = -1
ReferenceBlackWhite = -1
ResolutionUnit = Inch
SMaxSampleValue = -1
SMinSampleValue = -1
SampleFormat = unsigned integer
SamplesPerPixel = 1
T4Options = -1
T6Options = -1
TileByteCounts = -1
TileLength = -1
TileOffsets = -1
TileWidth = -1
TransferFunction = -1
TransferRange = -1
WhitePoint = -1
XPosition = -1
XResolution = 206
YCbCrCoefficients = -1
YCbCrPositioning = -1
YPosition = -1
YResolution = 206
--- Image Metadata ---

------------------------

Title: 54_TOP_0534.tif
Width:  203854.2626 pixels (1658)
Height:  200534.5611 pixels (1631)
Resolution:  0.0081 pixels per pixel
Pixel size: 122.9519x122.9519 pixel
ID: -3
Coordinate origin:  0,0
Bits per pixel: 16 (unsigned)
Display range: 0 - 27108
No Threshold
Magnification: 0.50
Uncalibrated
Path: \TOP VIEW TIFS\54_TOP_0534.tif
Screen location: 12,110 (1280x1024)
No Overlay
No Selection

[DonRothGE · Accepted solution]

Folks -

For whatever reason, u16 TIF images are sometimes not read in properly and this is clearly a Vision problem for NI to look into. The solution is below not unexpectedly from Andrey who is on the Mount Rushmore of Vision programming experts.

http://forums.ni.com/t5/Machine-Vision/open-greyscale-U16-image-problem/m-p/2414022#M38645

Sincerely,

Don