1. An assembly comprising:
a turbine housing that comprises a bore, a wastegate seat and two wastegate passages that extend to the wastegate seat;
a rotatable wastegate shaft configured for receipt by the bore;
a wastegate arm extending from the wastegate shaft; and
a wastegate plug extending from the wastegate arm wherein the wastegate plug comprises a profile defined in part by a portion of a torus, for contacting the wastegate seat in a closed state, and defined in part by two plug portions, for defining clearances with respect to the wastegate seat in an open state wherein in the closed state each of the two plug portions of the wastegate plug extends into a respective one of the wastegate passages.
2. The assembly of claim 1 wherein at least the wastegate arm and the wastegate plug comprise a unitary component.
3. The assembly of claim 1 wherein each of the two plug portions comprises a surface defined at least in part by a portion of a spherical lune.
4. The assembly of claim 1 wherein each of the two plug portions comprises a shape defined at least in part by a portion of a spherical wedge.
5. The assembly of claim 1 wherein the turbine housing comprises a divider wall disposed between the two wastegate passages.
6. The assembly of claim 5 wherein the wastegate plug comprises a gap between the two plug portions that accommodates the divider wall in the closed state.
7. The assembly of claim 5 wherein the divider wall is approximately orthogonal to a rotational axis of the wastegate shaft.
8. The assembly of claim 5 wherein, in the closed state, an approximately inverted U-shaped clearance exists between the divider wall and the two plug portions.
9. The assembly of claim 1 wherein the wastegate seat comprises a conical shape.
10. The assembly of claim 1 wherein the turbine housing comprises two volutes.
11. The assembly of claim 1 wherein the wastegate shaft comprises an axis and the bore comprises an axis and wherein for a predetermined angular misalignment of the axes of \xb15 degrees, the wastegate plug, circumferentially along the profile defined in part by the portion of the torus, is in contact with the wastegate seat in the closed state.
12. The assembly of claim 1 wherein the wastegate shaft comprises an axis and the bore comprises an axis and wherein for a predetermined displacement misalignment of the axes of \xb11.6 mm, the wastegate plug, circumferentially along the profile defined in part by the portion of the torus, is in contact with the wastegate seat in the closed state.
13. The assembly of claim 1 wherein the wastegate seat comprises a conical shaped portion that extends between an upper edge of the conical shaped portion and a lower edge of the conical shaped portion.
14. The assembly of claim 13 wherein the housing comprises a divider wall disposed between the two wastegate passages that extends to the lower edge of the conical shaped portion of the wastegate seat.
15. The assembly of claim 1 wherein the two plug portions comprise shapes defined in part by a spherical cap cut by two cutting planes wherein the two plug portions comprise a gap therebetween defined at least in part by the two cutting planes.
16. The assembly of claim 15 wherein a height of each of the two plug portions is less than a height of the spherical cap.
17. The assembly of claim 1 wherein the wastegate seat comprises a shoulder that comprises an edge wherein the portion of a torus contacts the edge in the closed state.
18. An assembly comprising:
a turbine housing that comprises a bore, a wastegate seat and two wastegate passages that extend to the wastegate seat;
a rotatable wastegate shaft configured for receipt by the bore;
a wastegate arm extending from the wastegate shaft; and
a wastegate plug extending from the wastegate arm wherein the wastegate plug comprises a profile defined in part by a portion of a torus, for contacting the wastegate seat in a closed state, and defined in part by two plug portions, for defining clearances with respect to the wastegate seat in an open state, wherein the wastegate seat comprises a conical shaped portion that extends between an upper edge of the conical shaped portion and a lower edge of the conical shaped portion and wherein the housing comprises a divider wall disposed between the two wastegate passages, wherein the divider wall extends to the lower edge of the conical shaped portion of the wastegate seat.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method, comprising:
determining, by an electronic image capturing device, an augmented reality representation of an object based at least in part on an analysis of one or more two-dimensional images of the object, wherein the augmented reality representation includes a plurality of surface hypotheses;
determining one or more reliability values associated with individual surface hypotheses;
comparing the one or more reliability values with one or more threshold reliability criteria to identify one or more surface areas of interest from the plurality of surface hypotheses; and
displaying guidance regarding capturing one or more additional two-dimensional images of the object via a display of the electronic image capturing device, wherein the guidance is based at least in part on the identified surface areas of interest;
wherein the guidance indicates the one or more reliability values associated with individual surface hypotheses of the one or more surface hypotheses and wherein the one or more reliability values are calculated for the individual surface hypotheses based on an area proportion comprising a point density below an average point density and a surface mean error.
2. The method of claim 1, further comprising:
determining one or more viewing cones associated with individual surface areas of interest; and
determining a view range and orientation associated with one or more of the viewing cones based at least in part on a quality level input,
wherein the guidance is based at least in part on the view range and orientation associated with one or more of the viewing cones.
3. The method of claim 2, wherein the one or more viewing cones individually comprise a defined viewing area bounded by a defined viewing angle and centered by a surface normal vector.
4. The method of claim 1, further comprising:
monitoring real-time video data; and
determining a real-time relative position and orientation between the electronic image capturing device and the object based at least in part on the real-time video data,
wherein the guidance is based at least in part on the determined real-time relative position and orientation between the electronic image capturing device and the object.
5. The method of claim 1, wherein the augmented reality representation comprises a three-dimensional image of the object.
6. The method of claim 1, wherein the plurality of surface hypotheses are computed employing a Random Sample Consensus Surface Extraction (RANSAC) algorithm.
7. The method of claim 1, wherein the one or more threshold reliability criteria comprise one or more of the following criteria: a pixel per area threshold, an incomplete image data threshold, andor an absent image data threshold.
8. The method of claim 1, wherein the guidance indicates one or more vantage points for capturing the one or more additional two-dimensional images of the object.
9. The method of claim 1, further comprising receiving an indication from a user that one or more two-dimensional images of the object have been selected, wherein the determining, by an electronic image capturing device, of the augmented reality representation of the object is based at least in part on the indication from the user.
10. An electronic image capturing device, comprising:
an optical sensor configured to capture two-dimensional images of an object and capture real-time video data; and
a control unit configured to:
determine an augmented reality representation of the object based at least in part on an analysis of one or more two-dimensional images of the object, wherein the augmented reality representation includes a plurality of surface hypotheses;
determine one or more reliability values associated with individual surface hypotheses;
compare of the one or more reliability values with one or more threshold reliability criteria to identify one or more surface areas of interest from the plurality of surface hypotheses; and
determine guidance regarding capturing one or more additional two-dimensional images of the object via a display of the electronic image capturing device, wherein the guidance is based at least in part on the identified surface areas of interest;
wherein the guidance indicates the one or more reliability values associated with individual surface hypotheses of the one or more surface hypotheses and wherein the one or more reliability values are calculated for the individual surface hypotheses based on an area proportion comprising a point density below an average point density and a surface mean error.
11. The electronic image capturing device of claim 10, wherein the control unit is further configured to:
determine one or more viewing cones associated with individual surface areas of interest; and
determine a view range and orientation associated with one or more of the viewing cones based at least in part on a quality level input, wherein the guidance is based at least in part on the view range and orientation associated with one or more of the viewing cones.
12. The electronic image capturing device of claim 11, wherein the one or more viewing cones individually comprise a defined viewing area bounded by a defined viewing angle and centered by a surface normal vector.
13. The electronic image capturing device of claim 10, wherein the control unit is further configured to:
monitor real-time video data; and
determine a real-time relative position and orientation between the electronic image capturing device and the object based at least in part on the real-time video data,
wherein the guidance is based at least in part on the determined real-time relative position and orientation between the electronic image capturing device and the object.
14. The electronic image capturing device of claim 10, wherein the augmented reality representation comprises a three-dimensional image of the object, wherein the guidance regarding capturing the one or more additional two-dimensional images is configured to direct a user to capture the one or more two-dimensional images from a particular perspective wherein the one or more two-dimensional images are identified to supplement data associated with the plurality of surface hypotheses to increase the one or more reliability values.
15. The electronic image capturing device of claim 10, wherein the plurality of surface hypotheses are computed employing a Random Sample Consensus Surface Extraction (RANSAC) algorithm.
16. The electronic image capturing device of claim 10, wherein the one or more threshold reliability criteria comprise one or more of the following criteria: a pixel per area threshold, an incomplete image data threshold, andor an absent image data threshold.
17. The electronic image capturing device of claim 10, wherein the guidance indicates one or more vantage points for capturing the one or more additional two-dimensional images of the object.
18. The electronic image capturing device of claim 10, wherein the guidance indicates the reliability values associated with individual surface hypotheses.
19. The electronic image capturing device of claim 10, wherein the electronic image capturing device comprises a digital camera, a cell phone, a personal data assistant, a mobile computing pad, a personal media player device, or a wireless web-watch device.
20. An article comprising:
a non-transitory computer readable medium comprising machine-readable instructions stored thereon, which, if executed by one or more processors, operatively enable a computing device to:
determine an augmented reality representation of an object based at least in part on an analysis of one or more two-dimensional images of the object, wherein the augmented reality representation includes a plurality of surface hypotheses;
determine one or more reliability values associated with individual surface hypotheses wherein the reliability values are based at least in part on the number of pixels available per area units;
compare of the one or more reliability values with one or more threshold reliability criteria to identify one or more surface areas of interest from the plurality of surface hypotheses; and
determine guidance regarding capturing one or more additional two-dimensional images of the object via a display of the electronic image capturing device, wherein the guidance is based at least in part on the identified surface areas of interest, wherein the additional two-dimensional image is identified to supplement data associated with the plurality of surface hypotheses to increase the one or more reliability values.