Using 11.1.x
Place the image on the server/install location ours are here
"\Program Files\ibm\cognos\analytics\webcontent\bi\samples\images\picture.jpg"
Then on the dashbaord use the image widget and enter server address then part of the file path, in our example
"http://v-srvr-a:9300/bi/samples/images/picture.jpg"
Be aware that case is critical in the file name and extension.
File types I know to work are .jpg, .gif, .png
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Jonathan berry
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