converting image to binary code n vice versa

[nupurashi]

hello
please help me out
i am getting the bit stream from a device n want to convert the binary data to the image file

if some one can tell me hw to convert the image to binary
plz help me

[toadaly]

Use javax.imageio.ImageIO to read/write images. To create an image from raw data, first create a java.awt.image.BufferedImage of the desired size, then call it's getRaster method to get a WritableRaster. Then call one of the setPixels methods on the WritableRaster with your data. Now you can persist the BufferedImage to a jpeg, or png, or whatever using ImageIO.

There are other ways to do it as well, but this is probably the easiest.

[nupurashi]

hello
thanks 4 reply
plz if u can mail me the simple code to do the same
and i have the byte stream coming from a hardware device and the byte stream are as following


0B01010101
0B00000000
0B00000000
0B00000000
0B00000000
0B00000000
0B00000000
0B00000000
0B00000000
upto 65 times
then again
0B01010101
again 65 readings
when any change then
0B00000100

now to explain
0B01010101 ------ marks starting of one frame
we have 65 readings in a frame
0B ---is header
now each 0 stands for a section of frame
0 stands for black and 1 stands for white

now the problem is convert it into an image

plz help me out

[geminius]

hello,
i am an engineering student
I need to convert the colored image to its binary image so as to apply Euclidean distance transform on the binary image...
i would be grateful if someone could tell me the code for conversion of a colored image to binary image.

[OrangeDog]

Germinius - Please don't hijack other people's threads. You probably want to take the average of the RGB values and apply a simple threshold (127 for example).

Nupurashi - If there are only 3 options then just detect which one it is and show whichever image you want. Otherwise, create a binary format BufferedImage of the correct size (8x8) and draw directly onto it, or cut off the 01010101 header and pass the trimmed array to the BufferedImage constructor.