Read and write blocks of blocked image data as PNG files
PNGBlocks object is an adapter that writes 2-D blocked image
data in the PNG format.
When writing to disk, the object creates an individual PNG file for each block and saves the image files in a folder. For multiresolution images, the object creates one subfolder for each resolution level. The object also creates and saves a MAT file with information about the blocked image, including the image size, block size, and data type.
The table lists the support that the
PNGBlocks object has for various
This object supports 2-D images only:
|Multiple resolution levels||Yes|
|Process blocks in parallel using the ||Yes|
|Resume block processing using the ||Yes|
adapter = images.blocked.PNGBlocks creates a
PNGBlocks object that reads and writes blocked image data as PNG files,
with one PNG file for each block.
Save Image Data in Folder with One PNG File Per Block
Create a blocked image.
bim = blockedImage('tumor_091R.tif');
Write image data to files. Specify the
wa = images.blocked.PNGBlocks(); write(bim, "dirOfPNGs", "Adapter", wa);
Create a blocked image from the folder of images. The
blockedImage object automatically picks the appropriate adapter.
bpng = blockedImage("dirOfPNGs"); disp(bpng.Adapter)
PNGBlocks with properties: BlockFormat: "png"
Introduced in R2021a