/// <summary>
/// Initialize the ImageSet by creating the master list of images, starting its background image loading thread, and then creating the master index that maps the organization of the dataset.
/// </summary>
/// <param name="bSilentLoad">Specifies to load the data silently without status output.</param>
/// <param name="bUseUniqueLabelIndexes">Optionally, specifies to use unique label indexes which is slightly slower, but ensures each label is hit per epoch equally (default = true).</param>
/// <param name="bUseUniqueImageIndexes">Optionally, specifies to use unique image indexes which is slightly slower, but ensures each image is hit per epoch (default = true).</param>
/// <param name="nMaxLoadCount">Optionally, specifies to automaticall start the image refresh which only applies when the number of images loaded into memory is less than the actual number of images (default = false).</param>
/// <returns>Once initialized, the default query state for the image set is returned. This method may be called multiple times and each time returns a new QueryState.</returns>
public QueryState Initialize(bool bSilentLoad, bool bUseUniqueLabelIndexes = true, bool bUseUniqueImageIndexes = true, int nMaxLoadCount = 0)
{
if (m_masterList == null)
{
m_masterList = new MasterList(m_random, m_log, m_src, m_factory, m_rgAbort, nMaxLoadCount);
if (OnCalculateImageMean != null)
{
m_masterList.OnCalculateImageMean += OnCalculateImageMean;
}
if (m_loadMethod == IMAGEDB_LOAD_METHOD.LOAD_ALL || m_loadMethod == IMAGEDB_LOAD_METHOD.LOAD_EXTERNAL || m_loadMethod == IMAGEDB_LOAD_METHOD.LOAD_ON_DEMAND_BACKGROUND)
{
m_masterList.Load(bSilentLoad);
}
}
if (m_masterIdx == null || m_masterIdx.LoadLimit != nMaxLoadCount)
{
m_masterIdx = new MasterIndexes(m_random, m_src, nMaxLoadCount);
}
QueryState state = new QueryState(m_masterIdx, bUseUniqueLabelIndexes, bUseUniqueImageIndexes);
if (m_loadMethod == IMAGEDB_LOAD_METHOD.LOAD_ALL)
{
m_masterList.WaitForLoadingToComplete(m_rgAbort);
}
return(state);
}
/// <summary>
/// The constructor.
/// </summary>
/// <param name="master">Specifies the MasterIndexes to copy.</param>
/// <param name="bUseUniqueLabelIndexes">Optionally, specifies to use unique label indexes which is slightly slower, but ensures each label is hit per epoch equally (default = true).</param>
/// <param name="bUseUniqueImageIndexes">Optionally, specifies to use unique image indexes which is slightly slower, but ensures each image is hit per epoch (default = true).</param>
/// <param name="sort">Optionally, specifies the ordering to use on the indexes (default = BYIDX).</param>
public QueryState(MasterIndexes master, bool bUseUniqueLabelIndexes = true, bool bUseUniqueImageIndexes = true, IMGDB_SORT sort = IMGDB_SORT.BYIDX) : base(master, sort)
{
m_master = master;
m_stat = new LabelStats(master.LabelCount);
m_bUseUniqueLabelIndexes = bUseUniqueLabelIndexes;
m_bUseUniqueImageIndexes = bUseUniqueImageIndexes;
foreach (LabelDescriptor label in m_src.Labels)
{
m_stat.Add(label);
}
}
/// <summary>
/// The constructor used to copy another MasterIndexes and optionally specify a sorting for the indexes.
/// </summary>
/// <param name="idx">Specifies the MasterIndexes to copy.</param>
/// <param name="sort">Optionally, specifies a sorting to use on the indexes.</param>
public MasterIndexes(MasterIndexes idx, IMGDB_SORT sort)
{
m_sort = sort;
m_src = idx.m_src;
m_random = idx.m_random;
m_nLoadLimit = idx.m_nLoadLimit;
m_factory = new DatasetFactory(idx.m_factory);
m_index = idx.m_index.Clone(sort);
m_rgLabels = new LabelIndex(idx.m_rgLabels);
m_boosted = idx.m_boosted.Clone(sort);
m_rgLabelsBoosted = new LabelIndex(idx.m_rgLabelsBoosted);
}
/// <summary>
/// Releases the resouces used.
/// </summary>
/// <param name="bDisposing">Set to <i>true</i> when called by Dispose()</param>
protected override void Dispose(bool bDisposing)
{
m_evtCancel.Set();
if (m_masterIdx != null)
{
m_masterIdx.Dispose();
m_masterIdx = null;
}
if (m_masterList != null)
{
m_masterList.Dispose();
m_masterList = null;
}
base.Dispose(bDisposing);
}
/// <summary>
/// Verify the loaded images against the master indexes.
/// </summary>
/// <param name="idx">Specifies the master indexes.</param>
public void Verify(MasterIndexes idx)
{
if (idx.RawIndexes.Count != m_rgImages.Length)
{
throw new Exception("The index count should match the image count!");
}
List <int> rgObservedIdx = new List <int>();
for (int i = 0; i < m_rgImages.Length; i++)
{
if (rgObservedIdx.Contains(m_rgImages[i].Index))
{
throw new Exception("Duplicate image index found! Your dataset may be corrupt.");
}
if (idx.RawIndexes[i].Index != m_rgImages[i].Index)
{
throw new Exception("The image indexs do not match! You may need to re-index the image list.");
}
rgObservedIdx.Add(m_rgImages[i].Index);
}
}
