use ACD See, the famous software for reading pictures. I use the Chinese version of 6.. There are many downloads on the internet.
after installing ACD6., click a picture, and the system will automatically call ACD to open it. Click Modify and Resize in the menu bar above the window, and then adjust the width and height of Pixel in the edit box on the right. Finally, click Finish.
I need to remind you:
First, if you want to use ACD version 4. or above, the old version will not enlarge well and there will be "mosaics".
second, don't make it too big. After all, the processing of software is limited.
In addition, the width and height should be standardized. Here are the reference standards.
the relationship between digital photos and resolution
5 million pixels are effective 49152, and the pixels are 256X192. The size of the developable photo is 17X13, the diagonal is 21 inches
4 million pixels are effective, 3871488 pixels are 2272X174 pixels. The size of the developable photo is 15X11, the diagonal is 19 inches
, the effective pixel is 3,145,728, and the pixel is 248X1536. The size of the developable photo is 14X1, the diagonal is 17 inches
, the effective number of 2 million pixels is 192, and the pixel is 16X12. The size of the developable photo is 11X8, the diagonal is p>13 inches
1.3 million pixels are effective, 12288 pixels are 128X96. The size of the developable photo is 9X6, the diagonal is 11 inches
.8 million pixels are effective 786432, and the pixels are 124X768. The size of the developable photo is 7X5, the diagonal is 9 inches
.5 million pixels are effective 48,, and the pixels are 8X6. The size of the developable photo is 5X4, and the diagonal is 7 inches
. The effective number of .3 million pixels is 37,2, and the pixel is 64X48. The size of the developable photo is 4X3, and the diagonal is 5 inches
As can be seen from the above table,
a 5-inch photo (3.5X5) with 8X6 resolution is enough
a 6-inch photo (4X6), a 124X768 resolution
a 7-inch photo (5X7) and a 124X768 resolution
an 8-inch photo.