Image compression using conjugate symmetric sequency-ordered complex hadamard transform [CS-SCHT]
In this report, image compression using a new transform called Sequency-ordered Complex Hadamard Transform (CS-SCHT) is presented with simulation results and computer based implementation demo. This compression method is specifically introduced for reducing computational complexity, archiving reason...
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| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2009
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| Online Access: | http://hdl.handle.net/10356/17932 |
| _version_ | 1824456473919356928 |
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| author | Shwe, Cherry Tin. |
| author2 | Ng Boon Poh |
| author_facet | Ng Boon Poh Shwe, Cherry Tin. |
| author_sort | Shwe, Cherry Tin. |
| collection | NTU |
| description | In this report, image compression using a new transform called Sequency-ordered Complex Hadamard Transform (CS-SCHT) is presented with simulation results and computer based implementation demo. This compression method is specifically introduced for reducing computational complexity, archiving reasonably high-quality images of scanned documents with lowering cost for future real-time implementation.
Transform matrix of the CS-SCHT possesses sequency ordering and its spectrum is a conjugated symmetric. Comparison of energy compaction capabilities of commonly used transforms such as discrete cosine transforms (DCT), sequence ordered Walsh transform (SOWT) and CS-SCHT are given. Computational load of the CS-SCHT is also compared against the above mentioned commonly used transforms. Derivation and proof of its properties are discussed and analyzed with applications in image compression. Mean-square-error (MSE) and Peak Signal to Noise Ratio (PSNR) performances are considered as standard measures of image quality. Simulation results from MATLAB and low level programming language C# proved that the CS-SCHT is promising to be developed in such application. |
| first_indexed | 2025-02-19T03:54:40Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/17932 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:54:40Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | ntu-10356/179322023-07-07T17:48:38Z Image compression using conjugate symmetric sequency-ordered complex hadamard transform [CS-SCHT] Shwe, Cherry Tin. Ng Boon Poh School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering In this report, image compression using a new transform called Sequency-ordered Complex Hadamard Transform (CS-SCHT) is presented with simulation results and computer based implementation demo. This compression method is specifically introduced for reducing computational complexity, archiving reasonably high-quality images of scanned documents with lowering cost for future real-time implementation. Transform matrix of the CS-SCHT possesses sequency ordering and its spectrum is a conjugated symmetric. Comparison of energy compaction capabilities of commonly used transforms such as discrete cosine transforms (DCT), sequence ordered Walsh transform (SOWT) and CS-SCHT are given. Computational load of the CS-SCHT is also compared against the above mentioned commonly used transforms. Derivation and proof of its properties are discussed and analyzed with applications in image compression. Mean-square-error (MSE) and Peak Signal to Noise Ratio (PSNR) performances are considered as standard measures of image quality. Simulation results from MATLAB and low level programming language C# proved that the CS-SCHT is promising to be developed in such application. Bachelor of Engineering 2009-06-18T02:13:23Z 2009-06-18T02:13:23Z 2009 2009 Final Year Project (FYP) http://hdl.handle.net/10356/17932 en Nanyang Technological University 103 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering Shwe, Cherry Tin. Image compression using conjugate symmetric sequency-ordered complex hadamard transform [CS-SCHT] |
| title | Image compression using conjugate symmetric sequency-ordered complex hadamard transform [CS-SCHT] |
| title_full | Image compression using conjugate symmetric sequency-ordered complex hadamard transform [CS-SCHT] |
| title_fullStr | Image compression using conjugate symmetric sequency-ordered complex hadamard transform [CS-SCHT] |
| title_full_unstemmed | Image compression using conjugate symmetric sequency-ordered complex hadamard transform [CS-SCHT] |
| title_short | Image compression using conjugate symmetric sequency-ordered complex hadamard transform [CS-SCHT] |
| title_sort | image compression using conjugate symmetric sequency ordered complex hadamard transform cs scht |
| topic | DRNTU::Engineering::Electrical and electronic engineering |
| url | http://hdl.handle.net/10356/17932 |
| work_keys_str_mv | AT shwecherrytin imagecompressionusingconjugatesymmetricsequencyorderedcomplexhadamardtransformcsscht |