1 / 18

1-D DISCRETE COSINE TRANSFORM DCT

1-D DISCRETE COSINE TRANSFORM DCT. 1-D INVERSE DISCRETE COSINE TRANSFORM IDCT. 1-D Basis Functions N= 8. 1-D Basis Functions N= 16. Example: 1D signal. 2-D DISCRETE COSINE TRANSFORM DCT. ADVANTAGES. Notice that the DCT is a real transform.

asta
Download Presentation

1-D DISCRETE COSINE TRANSFORM DCT

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. 1-D DISCRETE COSINE TRANSFORMDCT

  2. 1-D INVERSE DISCRETE COSINE TRANSFORMIDCT

  3. 1-D Basis Functions N=8

  4. 1-D Basis Functions N=16

  5. Example: 1D signal

  6. 2-D DISCRETE COSINE TRANSFORMDCT

  7. ADVANTAGES • Notice that the DCT is a real transform. • The DCT has excellent energy compaction properties. • There are fast algorithms to compute the DCT similar to the FFT.

  8. 2-D Basis Functions N=4

  9. 2-D Basis Functions N=8

  10. Separable

  11. Example: 2D signal

  12. 8x8 Block DCT

  13. Example: Energy Compaction

  14. Relation between DCT and DFT • Define

More Related