Write up and place on Dropbox.
1) The image appears flipped:
How can you fix it (WITHOUT using an image editing program)? You should use a Hex editor (such as HexEd).
Use this page and look at the Bitmap header. You will need to count the number of bytes needed to locate what to change and even how to change it. Be careful of how you store the data based on the proper Endian storage.
Explain what steps you needed to do to solve the problem. Be sure to include the original hex values and the new hex values for the bytes that you changed. Write up what you learned about data formats from this question.
2) If I have an image that is 800x500 pixels, using 24 bit color, uncompressed, how many bytes will the pixel data portion of my image take up?
3)
| BLUE | BLUE | BLUE |
| YELLOW | YELLOW | YELLOW |
| YELLOW | YELLOW | YELLOW |
| WHITE | WHITE | WHITE |
Look here for information
Turn the above 24 bit color image into an index colored image. Write out:
- The Color Lookup Table
- The pixel data
- The pixel depth needed for this image.
- The image dimensions
4) This site explains some of the JPEG hex values to play with the image data to make the image "glitch" and look corrupted. Again, please do this by hand and not using an image editing program.
Modify the squirrel image and "corrupt" it. Place the new image in your assignment.
Sample image that is corrupted, but you should corrupt the squirrel.
