<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def fluoview_description_metadata(description, ignoresections=None):
 """Return metatata from FluoView image description as dict. The FluoView image description format is unspecified. Expect failures. {'Intensity Mapping': {'Map Ch0: Range': '00000 to 02047'}} """

    if not description.startswith('['):
        raise ValueError('invalid FluoView image description')
    if ignoresections is None:
        ignoresections = {'Region Info (Fields)', 'Protocol Description'}

    result = {}
    sections = [result]
    comment = False
    for line in description.splitlines():
        if not comment:
            line = line.strip()
        if not line:
            continue
        if line[0] == '[':
            if line[-5:] == ' End]':
                # close section
                del sections[-1]
                section = sections[-1]
                name = line[1:-5]
                if comment:
                    section[name] = '\n'.join(section[name])
                if name[:4] == 'LUT ':
                    a = numpy.array(section[name], dtype='uint8')
                    a.shape = -1, 3
                    section[name] = a
                continue
            # new section
            comment = False
            name = line[1:-1]
            if name[:4] == 'LUT ':
                section = []
            elif name in ignoresections:
                section = []
                comment = True
            else:
                section = {}
            sections.append(section)
            result[name] = section
            continue
        # add entry
        if comment:
            section.append(line)
            continue
        line = line.split('=', 1)
        if len(line) == 1:
            section[line[0].strip()] = None
            continue
        key, value = line
        if key[:4] == 'RGB ':
            section.extend(int(rgb) for rgb in value.split())
        else:
            section[key.strip()] = astype(value.strip())
    return result