write a program to control the quantization matrices used for compression -- 2
Budget: $30 – $250 CAD
. Using JPEG as an example, you are required to write a program to control the quantization matrices used for compression. A brief discussion of the impact is included as part of the assignment.
Follow these steps:
Download this image. Note that the image is in bitmap format and is quite large. If you are running on unstable Internet service and have a problem downloading the file, please contact your tutor for assistance.
flower.bmp
Write a Java class that converts the bitmap image to JPEG format.
Add a second viewable pane on your image viewer in TME 1. The original pane should display the original bitmap image, and the second pane should display the converted JPEG image.
TME2_Sample_Screen.JPG
Add a mechanism to input the quantization matrix. It should have three options: (a) default JPEG matrix - the numbers can be found on Table 9.1 and Table 9.2 of the textbook; (b) a constant number; (c) DC component only (i.e. set all other numbers to zero).
Add an option to the File menu to output the compressed JPEG image to the hard disk.
Deliverable
All source codes.
A setup guide to allow your tutor to set up the necessary environment and run the programs.
Four compressed output files: (a) with default quantization matrix; (b) A low constant number (e.g. 1); (c) A absurdly high number (e.g. 200); (d) DC component only.
A discussion document – discuss the various effects of the output file. Why are they like that? Will JPEG 2000 improve the quality?
Follow these steps:
Download this image. Note that the image is in bitmap format and is quite large. If you are running on unstable Internet service and have a problem downloading the file, please contact your tutor for assistance.
flower.bmp
Write a Java class that converts the bitmap image to JPEG format.
Add a second viewable pane on your image viewer in TME 1. The original pane should display the original bitmap image, and the second pane should display the converted JPEG image.
TME2_Sample_Screen.JPG
Add a mechanism to input the quantization matrix. It should have three options: (a) default JPEG matrix - the numbers can be found on Table 9.1 and Table 9.2 of the textbook; (b) a constant number; (c) DC component only (i.e. set all other numbers to zero).
Add an option to the File menu to output the compressed JPEG image to the hard disk.
Deliverable
All source codes.
A setup guide to allow your tutor to set up the necessary environment and run the programs.
Four compressed output files: (a) with default quantization matrix; (b) A low constant number (e.g. 1); (c) A absurdly high number (e.g. 200); (d) DC component only.
A discussion document – discuss the various effects of the output file. Why are they like that? Will JPEG 2000 improve the quality?