1 # Configuration of the image library (included by cf/sherlock)
3 ######## General parameters #####################################################
7 # Default tracing level (0 to disable)
10 # Limits for image allocation
11 ImageMaxDim 0xffff # Maximum width/height (at most 64k-1)
12 ImageMaxBytes 256M # Maximum size in bytes
16 ######## Image signatures #######################################################
20 # To find similar images, Sherlock uses comparison based on regions.
21 # First of all, the imagesim analyser extracts various region features.
22 # Sets of these features are called "image signatures" and they are stored
23 # in the `H' attribute of image objects.
25 # Signatures are later processed by the indexer to build an effective
26 # search structure finally used by the search server. See Indexer and Search
27 # sections for more options.
29 # Minimum image size to apply segmentation. Smaller images are always
30 # compared by the simple "average" method (see ImageSig.CompareMethod).
34 # List of subdivision thresholds in the first phase of segmentation.
35 # Lower the values to increase the average number of regions and vice versa.
36 PreQuantThresholds 6 12 15 20 25 25 30 30 40 40 50 50 60 60 60
38 # Settings for the second phase of segmentation -- usually not so important.
39 # We use an iterative algorithm to improve the average error from the first phase.
40 # We stop the process after PostQuantMaxSteps or if we get only PostQuantThreshold
41 # percentual improvement over the previous step.
46 # BorderBonus and BorderSize parameters can increase or decrease the weight
47 # of image pixels near the borders. Weight of all pixels more than BorderSize * MIN(cols, rows)
48 # pixels far from the edges is 128. Then this value continuously decreses/increses up to 128+BorderSize.
52 # Scaling constants for computation of normalized i-th order inertia features (I1, I2, I3).
53 InertiaScale 2 0.5 0.05
55 # Threshold for detecting textured images (see images/sig-txt.c for details).
56 # Decrease the threshold if you want less detected textures,
57 # set it to zero to disable the algorithm completely.
58 TexturedThreshold 0.32
60 # Signature comparison method:
63 # based on: James Z. Wang, Jia Li and Gio Wiederhold,
64 # "SIMPLIcity: Semantics-Sensitive Integrated Matching for Picture Libraries",
65 # IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 23, no. 9, pp. 947-963, 2001.
67 # fuzzy (unstable and unbalanced parameters)
68 # based on: Yixin Chen and James Z. Wang,
69 # "A Region-Based Fuzzy Feature Matching Approach to Content-Based Image Retrieval",
70 # IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 24, no. 9, pp. 1252-1267, 2002.
73 # Simple distance of image features averages (ignores segmentation).
75 CompareMethod integrated
77 # Array of multiplicative constants in feature vector distance computation
78 # (L, u, v, LH, HL, HH, I1, I2, I3, X, Y). Each one must be an integer in range 0..15, default is 4.
79 CompareFeaturesWeights 4 6 6 4 4 4 4 4 4 4 4
83 ######## Duplicate finder #######################################################
86 # Detection of image duplicates does not work yet.