Common use of Colour Coded Overlay Clause in Contracts

Colour Coded Overlay. Here the height values, derived from the delivered DTMs, are displayed as colour overlay over the ortho-rectified image. For the UoS relief the CTX ORI delivered by UoS was used. The CTX ORI delivered by UCL was used as a base map for the UCL relief. Figure 4-12 shows the produced overlays. On the left hand side the colour coded UCL DTM heights are displayed over the UCL CTX ORI that was delivered. Here, a good agreement between the colour coded heights and the visible surface in the UCL CTX ORI is present. The areas that have been identified as areas containing increased noise are likewise visible and can be clearly linked with regions of little to no texture in the CTX image. The coloured height information displays depressions in the visible craters, however, some well- defined craters with sharp rims, as judged from the ORI, appear to be little distinguishable from the height information. Little change of colour is visible inside the mid-sized craters – including Victoria crater – which would be expected. The right hand display of Figure 4-12 shows the colour coded heights of the UoS DTM over the CTX ORI delivered by UCL. The already seen linear pattern due to jitter across the scene is also well observed in the colour coded heights. Similar, the areas with increased noise can be made out by the irregular and random colouring in the northern parts of the scene and in the south- west of the Endeavour crater. Craters appear to be better represented in comparison to the UCL colour coded overlay. This might, however, be a matter of representation – the colour bar for the UoS display stretches over a smaller height range than the colour bar for the UCL DTM. In Figure 4-13 we can observe the HiRISe DTM with features showing the remnants of previous fluvial action just visible. The features in Victoria crater are well observed.

Colour Coded Overlay. Here the height values, values derived from the delivered DTMs, DTMs are displayed as colour overlay over the ortho-ortho- rectified image. For the UoS relief the CTX ORI delivered by UoS UCL was used. The CTX ORI delivered by UCL was used as a base map for the UCL relief. Figure 4-12 5 shows the produced overlays. On the left hand side the colour coded UCL DTM heights are displayed over the UCL CTX ORI that was delivered. Here, a good Good agreement between the colour coded heights coding and the visible topography is present, but this can only be assessed at a scale range >>100m by this technique. At these moderate scales, it can be demonstrated that the colours follow the surface features in the UCL CTX ORI is present. The areas that have been identified as areas containing increased noise are likewise visible consistently and craters and slopes can be clearly linked with regions of little to no texture in the CTX image. The coloured height information displays depressions in the visible craters, however, some well- defined craters with sharp rims, as judged from the ORI, appear to be little distinguishable identified from the height information. Little change At the accuracy level of >>100m. The colour scale also emphasises prominent relief features well such as for example a slight depression south-west of Columbia Hills where a different colours in comparison to the surroundings is visible inside the mid-sized craters – including Victoria crater – which would be expectednoticeable. The right hand display of Figure 4-12 5 shows the colour coded heights of the UoS DTM over the CTX ORI delivered by UCL. The already seen linear Colour coding agrees with the visible topography from the ORI only partly, as a radially distributed height offset pattern due to jitter across the scene is also well observed visible. Columbia Hills can be identified as a hill from the colour coding. However, in the colour coded heightssurroundings of Columbia Hill colours – indications of rough unstable terrain – do not agree with the visible topography that appears to be mostly flat with a few small but well defined craters. Similar, Judging based on the areas with increased noise can be made out by colours of the irregular and random colouring terrain in the northern parts of the scene North and in the south- west of the Endeavour crater. Craters appear to be better represented South is elevated in comparison with the central area. The latter appears to the UCL form an elliptical depression – almost like a vignetting effect – that could indicate a systematic effect. Note that colour coded overlay. This mightramps, howeverassociated to heights, be a matter of representation – the colour bar for the UoS display stretches over a smaller height range than the colour bar for the UCL DTMin Figure 4-5 differ only slightly between right and left display. In Figure 4-13 we 6 a fluvial-like feature can observe be clearly observed in the HiRISe UCL HiRISE DTM with features showing extending from the remnants two sets of previous fluvial action just visible. The hills and running to features in Victoria crater are well observedthe west with a set of 3 craters in a row.