1. A lead-free solder ball which is used for electrodes by mounting on a module substrate for a BGA or CSP and which has a solder composition comprising 0.5-1.1 mass % of Ag, 0.7-0.8 mass % of Cu, 0.05-0.08 mass % of Ni, and a remainder of Sn.
2. The lead-free solder ball according to claim 1, wherein the solder composition comprises 0.9-1.1 mass % of Ag, 0.7-0.8 mass % of Cu, 0.05-0.08 mass % of Ni, and a remainder of Sn.
3. The lead-free solder ball according to claim 1, wherein the solder composition comprises 1.0 mass % of Ag, 0.75 mass % of Cu, 0.07 mass % of Ni, and a remainder of Sn.
4. The lead-free solder ball according to claim 1, wherein the solder composition further contains at least one element selected from Fe, Co, and Pt in a total amount of 0.003-0.1 mass %.
5. The lead-free solder ball according to claim 1, wherein the solder composition further contains at least one element selected from Bi, In, Sb, P, and Ge in a total amount of 0.003-0.1 mass %.
6. The lead-free solder ball according to claim 1, wherein the solder ball has a diameter of at least 0.1 mm.
7. The lead-free solder ball according to claim 1, wherein the solder ball has a diameter of at least 0.3 mm.
8. The lead-free solder ball according to claim 1, wherein the solder ball has a diameter of at least 0.5 mm.
9. A method of forming a solder bump on a module substrate having electrodes selected from electroplated NiAu electrodes, electroless NiPdAu electrodes, and Cu-OSP electrodes using a lead-free solder ball wherein the lead-free solder ball is used for electrodes by mounting on a module substrate for a BGA or CSP and which has a solder composition comprising 0.5-1.1 mass % of Ag, 0.7-0.8 mass % of Cu, 0.05-0.08 mass % of Ni, and a remainder of Sn.
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 for stitching a plurality of video streams, comprising:
obtaining multiple video streams that correspond to a common period in time at which at least portions of individual video streams in the multiple video streams were captured;
determining at least one reference instant within the common period of time;
calculating a reference value of a construction parameter of one or more images from the multiple video streams captured at times that correspond to the determined reference instant; and
constructing a panoramic image by stitching together the images of the multiple video streams captured at times corresponding to the determined reference instant as part of creating a wide field video stream, such that the stitching is based on the reference value of the construction parameter.
2. The method of claim 1, further comprising:
selecting a panoramic image construction algorithm defining a plurality of geometric and radiometric construction parameters;
calculating the reference value at a first reference instant from the panoramic image construction algorithm;
calculating a reference value at other instants on the basis of the reference values of the construction parameter; and
stitching together the multiple video streams corresponding to a same reference instant.
3. The method of claim 1, wherein the construction parameters are held constant for the duration of the stitching of the multiple video streams.
4. The method of claim 3, wherein at least one of the construction parameters varies for at least a portion of the duration of the stitching of the multiple video streams.
5. The method of claim 3, wherein at least one of the construction parameters is obtained by a mathematical interpolation of a basis of at least two reference values of the construction parameter calculated at two different reference instants to obtain a continuous progression of time with respect to at least one construction parameter.
6. The method of claim 1, wherein the construction of the panoramic images further comprises using the reference values of the construction parameters at different reference instants.
7. The method of claim 1, wherein the reference values of the construction parameters is determined by calculating the mathematical interpolation of at least two reference values for two reference instants for a determined time interval.
8. The method of claim 7, wherein the mathematical interpolation comprises linear, Bezier, cubic, spline, or b-spline interpolation.
9. The method of claim 1, further comprising:
partially decoding the video streams at the determined reference instant; and
stitching together the panoramic images of the video streams corresponding to the reference instant and reference value of the construction parameter.
10. The method of claim 1, wherein calculating the reference value of the construction parameters at the reference instant further comprises modifying the construction parameters corresponding to at least two different camera viewpoint orientations to ensure a horizon is kept stable in the wide field video stream.
11. The method of claim 1, further comprising:
defining various reference instants based on manual or automatic selection, such that the various reference instants correspond to a common period of time; and
defining reference values of the construction parameters for various reference instants,
wherein the reference values are defined by combining the construction parameters obtained at various reference instants.
12. The method of claim 1, further comprising combining the images of the video streams at the determined reference instant in a display zone of a human-machine interface;
wherein the determined reference instant is input into the human-machine interface by an operator.
13. The method of claim 1, further comprising:
measuring a temporal offset of the multiple video streams with respect to time; and
synchronizing the multiple video streams by associating the images captured at proximate times within the various video streams.
14. The method of claim 13, wherein measuring the temporal offset of the multiple video streams further comprises identifying a soundtrack associated with the various video streams to identify sounds to further synchronize the multiple video streams in accordance to the soundtrack.
15. The method of claim 1, further comprising displaying the wide field video stream on a display space of at least one screen.
16. A stitching device for stitching a plurality of video stream comprising:
a processor
a non-transitory computer-readable medium operatively coupled to the processor and storing instructions that, when executed, cause the processor to:
obtain multiple video streams that correspond to a common period in time at which at least portions of individual video streams in the multiple video streams were captured;
determine at least one reference instant within the common period of time;
calculate a reference value of a construction parameter of one or more images from the multiple video streams at the determined reference instant; and
construct a panoramic image by stitching together the images of the multiple video streams corresponding to the determined reference instant, such stitching based on the reference value of the construction parameter.
17. A stitching device of claim 16, further comprising an interface for inputting at least one reference instant to calculate the reference value of the construction parameter.
18. A stitching device of claim 16, further comprising:
a first window for presenting the various video streams to be stitched;
a second window for viewing the panoramic image resulting from the stitching of the images of the various video streams at a determined reference instant;
a select area for inputting the determined reference instant; and
a third window for presenting a wide field video stream created from stitching the various video streams.
19. The system for stitching a plurality of video streams, comprising:
a camera holder comprising at least two adjacent housings to fasten at least a first and a second camera such that the cameras are oriented substantially perpendicular to one another; and
a stitching device with a anon-transitory computer-readable medium operatively coupled to a processor and storing instructions that, when executed, cause the processor to stitch various video streams filmed from at least the first and the second camera from the camera holder.
20. The system of claim 19, further comprising an integrated reader to view the wide field video stream on a screen of the stitching device.