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Contents
# Dicom Additions is a test extension of DICOM to allow for gathering common tags
class DicomGroup
# Array of DObjects to aggregate
attr_accessor :dobjects
# Hash of tags shared by all DICOMs in Directory
attr_reader :tags
# DICOM::DObject containing all common tags of the group
attr_reader :common
# Initialize with an array of strings or DICOM::DObjects to aggregate
def initialize(dicomgroup)
if dicomgroup.select {|dcm| dcm.is_a? DICOM::DObject }.empty?
@dobjects = dicomgroup.collect {|dcm| DICOM::DObject.new(dcm)}
else
@dobjects = dicomgroup
end
end
# Return a hash of tags and values of elements common to all DICOMs in the group.
def find_common_tags
@dobjects.inject(@dobjects.first.to_hash) do |memo, dobj|
memo = memo.similar(dobj.to_hash)
end
end
# Return a new DICOM::DObject containing elements common (identical tags and values) to all DICOMs in the group.
def find_common_elements
@dobjects.inject do |memo, dobj|
memo.remove_elements_that_differ_from dobj
memo
end
end
end
# Reopen DObject to make tag hash
class DICOM::DObject
# Return hash of {tags => values}
def to_hash
taghash = {}
@tags.each_key {|k| taghash[k] = value(k) }
return taghash
end
# Remove elements from a dobj that aren't identical to self's tags.
def remove_elements_that_differ_from(other_dobj)
@tags.each_key do |k|
unless @tags[k].eql? other_dobj[k]
# pp k, [@tags[k].value, other_dobj[k].value]
remove k
end
end
end
end
# Reopen DataElement to compare
class DICOM::DataElement
# Compare data elements on their tag and value
def eql?(other)
@tag == other.instance_eval("@tag") && @value == other.value && @bin == other.instance_eval("@bin")
end
end
Version data entries
15 entries across 15 versions & 1 rubygems