def dimensionsOf(path):
fr = None
try:
fr = ChannelSeparator()
fr.setGroupFiles(False)
fr.setId(path)
return fr.getSizeX(), fr.getSizeY()
except:
print sys.exc_info()
finally:
fr.close()
fr = ChannelSeparator()
fr.setGroupFiles(False)
fr.setId(filepath)
width, height, nSlices = fr.getSizeX(), fr.getSizeY(), fr.getSizeZ()
n_pixels = width * height * nSlices
bitDepth = fr.getBitsPerPixel()
fileSize = os.path.getsize(filepath)
headerSize = fileSize - (n_pixels * bitDepth / 8) # 8 bits in 1 byte
print "Dimensions:", width, height, nSlices
print "Bit depth: %i-bit" % bitDepth
print "Likely header size, in number of bytes:", headerSize
except:
# Print the error, if any
print sys.exc_info()
finally:
fr.close() # close the file handle safely and always
# For parsing TIFF file headers
from java.io import RandomAccessFile
from java.math import BigInteger
def parseNextIntBigEndian(ra, count):
# ra.read() reads a single byte as an unsigned int
return BigInteger([ra.readByte() for _ in xrange(count)]).intValue()
def parseNextIntLittleEndian(ra, count):
# ra.read() reads a single byte as an unsigned int
return BigInteger(reversed([ra.readByte()
for _ in xrange(count)])).intValue()
