1 / 7

Performance Evaluation of Graphics Recognition Systems Current investigations ….

Performance Evaluation of Graphics Recognition Systems Current investigations …. Mathieu Delalandre Meeting of Document Analysis Group Computer Vision Center Barcelona, Spain Wednesday 17th April 2007. Past Works (1/2) Building of Synthetic Graphic Document. Graphical Models. linked.

sheryl
Download Presentation

Performance Evaluation of Graphics Recognition Systems Current investigations ….

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Performance Evaluation of Graphics Recognition SystemsCurrent investigations …. Mathieu Delalandre Meeting of Document Analysis Group Computer Vision Center Barcelona, Spain Wednesday 17th April 2007

  2. Past Works (1/2)Building of Synthetic Graphic Document Graphical Models linked Null Between Full Setting File linked GT GT GT x’,y’ γ l Object Building Object Positioning dy   0  2Π end x,y end dx width width arc is directed to  because  is lower than γ radius width (x,y) center begin begin center (a) (b) System Overview Object Building Object Positioning

  3. Past Works (2/2)Building of Synthetic Graphic Document L dy1 dy2 b e p dx1 dx2 step 1 step 2 step 1 step 2 The push algorithm The insert algorithm step 1 step 2 step 1 step 2 The write algorithm The set algorithm (a) (b) B1 B1 ejects B2 of dx,dy l2 L overlap p if dx1 dx2 < 0 or dy1  dy2< 0 L overlaps L if e or b are overlapped (a) l1 d B2 dy L1 dx Boxes are overlapped if L1 overlaps L2or L2 overlaps L1 and L3 overlaps L4or L4 overlaps L3 θ L2 l3 L3 (3) (2) (c) l L4 (4) (b) (1) θ (1) dy (2) (3) dx (4) Object Positioning … 4000 documents 160 000 symbols

  4. Current Works (1/4)Graphics Model Enhancement 1 2 3 4 5 7 6 Introduction Vector Graphics Editor Model Enhancement (1) Vectorial distortion (2) Learning of structural based methods (3) Hand sketch characterisation …. Model in vector graphics form Line graph Well rendering ! Well structured ! l2 l1 layer float space heterogeneous objects

  5. Current Works (2/4)Graphics Model Enhancement r1 r0 r0 r0 Intersecting Object Model r0 x1,y1 x0,y0 x0,y0 x0,y0 x0,y0 OShape (4) (1) (2) (3) Building Algorithm Crossing Touching OPoint OLine OContour Liking l1 l1 pi l2 pi l2 l2 p OLabel OSLine OArc OPolyline OCircle ORectangle l2 pi pi r0 r1 l1 l1 c0 c1 x0 (6) (5) x1 (7) (9) (8) Shape Intersecting System Overview Object Model

  6. Current Works (3/4)Graphics Model Enhancement L dy1 dy2 C p dx1 dx2 l End touches the line End touches the line r1 α The current lineThe parameter line The parameter crossing point The current lineThe parameter line The parameter crossing point A center l L r2 β C l1 p center l2 l1 = l - r2 p1 p2 l2 = l - r1 connecting points d Begin touches the line Begin touches the line linking zones The current lineThe parameter line The parameter crossing point The current lineThe parameter line The parameter crossing point Touching/Crossing zones a stroke its medial axis r1 width l2 r2 L overlap p if dx1 dx2 < 0 or dy1  dy2< 0 l l1 l1 = l + r2 l2 = r1 - l Crossing /Touching Shape to Shape Touching Shape / Line Model Touching Threshold (1) (2) (3) Line to Shape Touching Crossing

  7. Current Works (4/4)Graphics Model Enhancement L2 l p L1 (1) (2) (3) w1 (4) If l  w1/2 or l  w2/2 then p links L2 (5) (6) the line and the parameter line Linking

More Related