writeEncodedStrip
Write data to specified strip
Description
writeEncodedStrip(
writes t
,stripNumber
,imageData
)imageData
to the strip specified by
stripNumber
to the TIFF file associated with the
Tiff
object t
.
Examples
Write Image Strip to TIFF File
Read two strips from a TIFF file and write them to a new TIFF file in different positions.
Open a TIFF file with image data in stripped layout, get the image data and the number of strips in the image.
tr = Tiff('peppers_RGB_stripped.tif','r'); imageR = read(tr); nStrips = numberOfStrips(tr)
nStrips = 6
Read the 2nd and 5th strips of the image.
stripTwo = readEncodedStrip(tr,2); stripFive = readEncodedStrip(tr,5);
Create a Tiff
object for a new file and copy the image and tag information from the first file.
tw = Tiff('write_strip.tif','w'); tagstruct.ImageLength = getTag(tr,'ImageLength'); tagstruct.ImageWidth = getTag(tr,'ImageWidth'); tagstruct.Photometric = getTag(tr,'Photometric'); tagstruct.RowsPerStrip = getTag(tr,'RowsPerStrip'); tagstruct.BitsPerSample = getTag(tr,'BitsPerSample'); tagstruct.SamplesPerPixel = getTag(tr,'SamplesPerPixel'); tagstruct.PlanarConfiguration = getTag(tr,'PlanarConfiguration'); setTag(tw,tagstruct); write(tw,imageR)
Write stripFive
in the position for strip number 2
and stripTwo
in the position for strip number 5
.
writeEncodedStrip(tw,2,stripFive); writeEncodedStrip(tw,5,stripTwo);
Read and display the new image next to the original image.
imageW = read(tw); subplot(121); imshow(imageR); title('Original Image') subplot(122); imshow(imageW); title('Strips Shuffled Image')
Close the Tiff
objects.
close(tr); close(tw);
Write Image Strip to YCbCr TIFF File
Read two strips from a YCbCr TIFF file and write them to a new TIFF file in different positions.
Open a TIFF file containing YCbCr image data in stripped layout, get the image data and the number of strips in the image.
tr = Tiff('peppers_YCbCr_stripped.tif','r'); [Yr,Cbr,Crr] = read(tr); nStrips = numberOfStrips(tr)
nStrips = 6
Read the 2
nd and 5
th strips of the image.
[Y2,Cb2,Cr2] = readEncodedStrip(tr,2); [Y5,Cb5,Cr5] = readEncodedStrip(tr,5);
Create a Tiff
object for a new file and copy the image and tag information from the first file.
tw = Tiff('write_strip.tif','w'); tagstruct.ImageLength = getTag(tr,'ImageLength'); tagstruct.ImageWidth = getTag(tr,'ImageWidth'); tagstruct.SampleFormat = getTag(tr,'SampleFormat'); tagstruct.Photometric = getTag(tr,'Photometric'); tagstruct.RowsPerStrip = getTag(tr,'RowsPerStrip'); tagstruct.BitsPerSample = getTag(tr,'BitsPerSample'); tagstruct.SamplesPerPixel = getTag(tr,'SamplesPerPixel'); tagstruct.YCbCrSubSampling = getTag(tr,'YCbCrSubSampling'); tagstruct.Compression = getTag(tr,'Compression'); tagstruct.PlanarConfiguration = getTag(tr,'PlanarConfiguration'); setTag(tw,tagstruct); write(tw,Yr,Cbr,Crr)
Write strip number 5 in the position for strip number 2
and strip number 2 in the position for strip number 5
.
writeEncodedStrip(tw,2,Y5,Cb5,Cr5); writeEncodedStrip(tw,5,Y2,Cb2,Cr2);
Read and display the Y component of the new image next to the original image.
[Yw,Crw,Cbw] = read(tw); subplot(121); imshow(Yr); title('Original Image (Y)') subplot(122); imshow(Yw); title('Strips Shuffled Image (Y)')
Close the Tiff
objects.
close(tr); close(tw);
Input Arguments
t
— Tiff object
Tiff
object
Tiff
object representing a TIFF file. Use the Tiff
function to create the object.
stripNumber
— Strip number
positive integer
Strip number, specified as a positive integer. Strip numbers are one-based numbers.
Example: 15
Data Types: double
imageData
— Image data
numeric array
Image data, specified as a numeric array.
If
imageData
has more number of bytes than the size of the strip, thenwriteEncodedStrip
issues a warning and truncates the data.If
imageData
has fewer number of bytes than the size of the strip, thenwriteEncodedStrip
silently pads the strip.
To determine the size of the strip, view the value of the
RowsPerStrip
tag.
Data Types: double
Y
— Luma component
numeric array
Luma component of the image data, specified as a two-dimensional numeric array.
Data Types: double
Cb
— Blue-difference chroma component
numeric array
Blue-difference chroma component of the image data, specified as a two-dimensional numeric array.
Data Types: double
Cr
— Red-difference chroma component
numeric array
Red-difference chroma component of the image data, specified as a two-dimensional numeric array.
Data Types: double
Algorithms
References
This function corresponds to the TIFFWriteEncodedStrip
function
in the LibTIFF C API. To use this function, you must be familiar with the TIFF
specification and technical notes. View this documentation at LibTIFF - TIFF Library and Utilities.
Version History
Introduced in R2009b
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