A method of operating a display system comprising a display, an image processing controller communicably coupled to the display and a memory communicably coupled to the image processing controller, for improving visualization of the display used by clinicians for diagnosing patients, the method comprising the steps of: • the display system operating the display at a first luminance setting; • the display system receiving a request for improved visualization; • in response to the request, the display system modifying the luminance of the display to cause the display to operate at a second luminance setting that is higher than the first luminance setting; and • the display system returning the display to the first luminance setting; wherein the modification of the luminance from the first luminance setting to the second luminance setting or from the second luminance setting to the first luminance setting defines a transition period; characterized in that: the display system continuously adapts display parameters of the display such that the display complies with Digital Imaging and Communications in Medicine grayscale standard display function, DICOM GSDF, at the first luminance setting and at the second luminance setting after an adaptation period in which a human eye adapts to the increase in luminance from the first luminance setting to the second luminance setting or to the decrease in luminance from the second luminance setting to the first luminance setting, wherein the transition period is shorter in duration than the adaptation period and wherein the display system modifies the display parameters to correspond to the increased luminance such that the perceived contrast at the second luminance setting is greater than the perceived contrast at the first luminance setting and wherein the display system continuously modifies the display parameters during the adaptation periods to match an adaptation of a human eye to the change in luminance, such that the human eye continuously perceives the display to be perceptually linearized. • the display system operating the display at a first luminance setting; • the display system receiving a request for improved visualization; • in response to the request, the display system modifying the luminance of the display to cause the display to operate at a second luminance setting that is higher than the first luminance setting; and • the display system returning the display to the first luminance setting; the display system continuously adapts display parameters of the display such that the display complies with Digital Imaging and Communications in Medicine grayscale standard display function, DICOM GSDF, at the first luminance setting and at the second luminance setting after an adaptation period in which a human eye adapts to the increase in luminance from the first luminance setting to the second luminance setting or to the decrease in luminance from the second luminance setting to the first luminance setting, wherein the transition period is shorter in duration than the adaptation period and wherein the display system modifies the display parameters to correspond to the increased luminance such that the perceived contrast at the second luminance setting is greater than the perceived contrast at the first luminance setting and wherein the display system continuously modifies the display parameters during the adaptation periods to match an adaptation of a human eye to the change in luminance, such that the human eye continuously perceives the display to be perceptually linearized.