human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "a graph based mathematical morphology reader"):
  Abstract: This survey paper aims at providing a ''literary'' anthology of mathematical morphology on graphs. It describes in the English language many ideas stemming from a large number of different papers, hence providing a unified view of an active and diverse field of research.

Includes members:
  Member "the emerging field of signal processing on graphs extending high dimensional data analysis to networks and other irregular domains":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "approximating spectral clustering via sampling a review")
  Member "a contrario selection of optimal partitions for image segmentation":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "a three stage approach for segmenting degraded color images smoothing lifting and thresholding slat")
  Member "morphological filtering in shape spaces applications using tree based image representations":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "invariant attribute profiles a spatial frequency joint feature extractor for hyperspectral image classification")
  Member "on the equivalence between hierarchical segmentations and ultrametric watersheds":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "the mutex watershed and its objective efficient parameter free image partitioning")
  Member "connected operators a review of region based morphological image processing techniques":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "hierarchical image simplification and segmentation based on mumford shah salient level line selection")
  Member "on topological watersheds":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "real time topological image smoothing on shared memory parallel machines")

Question: Please tell me which class the source paper belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.CV(Computer Vision and Pattern Recognition)