How to embed information in an image

im trying to add text to an image without it displaying on the image. basically i need to know how to embed text in a jpeg. currently im trying to send information by adding data to the least significant bit but to no avail.
any help will be much appreciated. thanks.

heres how it went kevin
i loaded an image. the image data is a cluster. by using unbundle by name i can separate it to components. the rgb info on the data is located in "image" in the unbundle. send this to a decimate...extracting 3 values. these three values are the rg and b components of the image. the rest is as i mentioned above. take either r,g or b value (doesnt matter which color you encode the data to) do a string to byte array. send through an empty for loop with the string length wired to the count...making the loop run as many times as the number of characters ur embedding. the result is sent to replace array subset (with index 0) and then interleaved with the remaining 2 channels to form back the composite rgb...send back to a bundle by name with the characteristics coming from the original image data. draw flattened pixmap and output (this displayed pic with encoded data...no difference!!). extraction is a reverse process but inside the forloop place index array with index zero. loop count once again wired to original string length. output from the for loop goes to a byte to string and string indicator! let me know if it works for you
dee.

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