Author Archives: billboyheritagesurvey

About billboyheritagesurvey

Heritage worker

Metric drawings from point clouds : the basics

In Recap point clouds are impressive. To get to something you can draw from they need slicing. Remember line of sight from the scanner will result in lost data in occluded areas, the ‘dark’ shadows are holes in the data. … Continue reading

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Cambridge to Huntingdon: update

This was the abrupt end to my ride to Huntingdon in January 2021. I ran out of road…. ..and this is what the same spot looked like in May 2021. The A14 enhancement NMU route from Girton to Fenstanton is … Continue reading

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Sir John & Lady de Creke 1325

A return with DSLR, tripod and remote shutter control. A high bypass filter applied to achieve a negative impression. I believe the text below is from: The Monumental Brasses of Cambridgeshire Volume 4 of Monumental Brass Society. County series by … Continue reading

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Sir John de Creke 1325

3 frame monatge Canon Ixus 70. Hand held monoplanar rectification.

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Route Werks bar bag: lid noise.

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Shooting for architectural photogrammetry.

1.Golden rules: Convergence: 2 images pointing at the same object from 2 view points creates intersections: this is convergent imagery. Overlap: pairs of convergent images must overlap by at least a third. Consistency: focal length, aperture and ISO need to … Continue reading

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Route werks handlebar bag a go go

So I took the plunge and shelled out the fairly steep price and around about a month later the box from China showed up. I’d read the reviews, swallowed the hype, had on-going leakage with the Karrimor and, in a … Continue reading

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The Rixen Kaul experiment

So much of life on a bike is about compromise: I ride a 12kg steel bike because I know the terrain I ride over and the loads I shift from time to time would destroy a featherweight machine so I … Continue reading

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Barrier trajectory

The trajectory forced by the barriers on the South ramp of the Swavesey bridge is unsafe. Once a rider has made the transition a few times speeds increase. The resultant path is actually worse than the unmodified elbow in place … Continue reading

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The 5 principles of Cycle Infrastructure Design in Cambridgeshire

Cambridshire hosts 2 big cycling schemes. Do they meet the test of the 5 design principles of LTN1/20? Continue reading

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