SU117329A1 - Photogrammetric precision instrument - Google Patents

Description

When creating maps in a differentiated way, stereometers and roll-stereometers are used that do not have the required accuracy and do not automate photogrammetric measurements.

The proposed photogrammetric precision instrument does not have these drawbacks and, moreover, allows it to be used as a stereometer and a core stereometer.

The essence of the invention is that the device is equipped with correction devices that communicate additional movements to the carriages with aerial photographs along the axis of the instrument and the rotational movements of aerial photographs relative to the axis of the applique, as well as additional devices on the corrector for correcting the longitudinal parallax for different scales of aerial photographs; In addition, the device has an optical device for rotating images of aerial photographs 90 and 180 °, regardless of their position in the device.

FIG. 1 shows the device in longitudinal section; in fig. 2 - the same in cross section; in fig. 3 - device in plan; in fig. 4 is a schematic diagram of the device correction device.

The device is designed as a stereocomparator. On the frame / there is a main carriage 2, which is moved along the abscissa axis by the steering wheel 3. On the main carriage is placed the left and right carriage 4 for the left and right snapshot of the stereo pair. The images are fixed on removable, interchangeable cassettes 5. The rights of the carriage with the image are moved by the wheel 6 relative to the left image by a value of the longitudinal parallax from –10 to –30 mm. Using the correctors 7 and S, the carriages 4 with pictures are informed of the additional movement along the abscissa axis of the device for their longitudinal tilt angles, and with the help of the correctors 9 to W, the images on the carriages get a rotational movement, resulting in correcting the longitudinal parallaxes for transverse tilt angles. On the right offset there is also an additional device // and 12 for correcting the longitudinal parallaxes for different oils 117329-2 -

staffing pictures. On the front side of the device, a box 13 with an optical lens is attached to the frame (a device including prisms 14, allowing the image of aerial photographs to be rotated at 90 and 180 ° regardless of their position in the device. Disks with measuring marks 15 and light filters 16 are also located inside the box The frame (along the axis of ordinates 17) is placed in the carriage 18 with the right and left optical parts, which is moved by a value of ± 90 mm using the crank 19. On this right carriage, the part is moved relative to the left hand wheel 20 by a value from -10 to +85 mm. Snee The micros are illuminated from above with a soffit 21. In the lower part of the frame of the bed are the left and right carriages 22 for spatial grids that are optically superimposed on the images of the images and viewed through the oculars 23. With the offsets turned off, the device works as a stereocomparator. core stereometer.

Subject invention

A photogrammetric precision instrument, made in the form of a stereocomparator with carriages moving on a bed, has the following feature: in order to use it as a precision stereometer and core stereometer, to automate photogrammetric measurements and increase their accuracy, it is a correction device for moving aerial photographs along the abscissa axis of the instrument and for their rotation relative to the axis of the aplicat, an additional equalizer of the right aerial photograph for correcting the longitudinal parallaxes for different dimensions with and ck is the optical device for rotating the image of aerial photographs 90 and 180 °, regardless of their position in the device.

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