Image 3 Graph
Here is the original.Size: 1267KB
Its .jpg and is 2560 x 1920
Summary : This image was my favourite image to do because dithering had a really nice effect on all the images. As the graph suggests, dithering had a big impact on most of the image's filesize, although the quality was improved noticably with each dithered version. I found it very hard to pick which image was the best but after comparing each I decided that the dithered 130 coloured image was the best. I picked the dithered version even though the file size was noticably bigger, the quality was much smoother.
The file size difference between the original and the optimum image is: 1,006 KB or roughly 20% of the original filesize.
No. of Colours :256Size:297KBDithering:YesQuality:Excellent quality but very high file size. Dithering smoothened out some parts nicely.
No. of Colours :256
Size:241KB
Dithering:No
Quality:Excellent quality but very high file size.
No. of Colours :200
Size:288KB
Dithering:Yes
Quality:Very good quality, the dithered version is better quality but the filesize is too big. There is little difference between this and the 256 colored version.
No. of Colours :200
Size:232KB
Dithering:No
Quality:Very good quality, it has a fair filesize as well. There is little difference between this and the 256 colored version.
No. of Colours :130
Size:261KB
Dithering:Yes
Quality:The quality of this image is good, although the dithered image is slightly better quality, the filesize is too big. This is the best image quality vs size.
No. of Colours :130
Size:202KB
Dithering:No
Quality:The quality of this image is good and the file size is acceptably low. The dithered image is slightly better quality.
No. of Colours :60Size:211KBDithering:YesQuality: The quality is fair, I found it hard to decide which image is better quality between the dithering and non-dithering, although the dithered image had a much higher filesize.
No. of Colours :60
Size:156KB
Dithering:No
Quality: The quality is fair, I found it hard to decide which image is better quality between the dithering and non-dithering, although the dithered image had a much higher filesize.
No. of Colours :25
Size:124KB
Dithering:Yes
Quality: The quality is poor, dithering had a nice effect on it though.
No. of Colours :25Size:102KBDithering:NoQuality: The quality is poor, dithering had a nice effect on it though.
No. of Colours :6Size:65KBDithering:YesQuality: The quality of this image is terrible, although it is clear as to what it is. Dithering helped dispersing the colors out.
No. of Colours :6Size:50KBDithering:NoQuality: The quality of this image is terrible, although it is clear as to what it is. Dithering helped dispersing the colors out.
