Patents by Inventor Narayana Karthik Sadanandam Ravirala
Narayana Karthik Sadanandam Ravirala has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10389948Abstract: A method for displaying preview images is disclosed. In one aspect, the method includes: receiving first images captured by a first camera having a first field-of-view (FOV), receiving second images captured by a second camera having a second FOV that is different than the first FOV, and displaying preview images generated based on the first and second images. The method may further include determining a spatial transform based on depth information associated with individual pixels in the first and second images, and upon receiving instructions to zoom in or out beyond a camera switching threshold, modifying the second image using the spatial transform and displaying the first image and the modified second image consecutively.Type: GrantFiled: December 6, 2016Date of Patent: August 20, 2019Assignee: QUALCOMM IncorporatedInventors: James Wilson Nash, Adarsh Abhay Golikeri, Narayana Karthik Sadanandam Ravirala
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Patent number: 10194089Abstract: Devices and methods for providing seamless preview images for multi-camera devices having two or more asymmetric cameras. A multi-camera device may include two asymmetric cameras disposed to image a target scene. The multi-camera device further includes a processor coupled to a memory component and a display, the processor configured to retrieve an image generated by a first camera from the memory component, retrieve an image generated by a second camera from the memory component, receive input corresponding to a preview zoom level, retrieve spatial transform information and photometric transform information from memory, modify at least one image received from the first and second cameras by the spatial transform and the photometric transform, and provide on the display a preview image comprising at least a portion of the at least one modified image and a portion of either the first image or the second image based on the preview zoom level.Type: GrantFiled: February 8, 2016Date of Patent: January 29, 2019Assignee: QUALCOMM IncorporatedInventors: James Wilson Nash, Kalin Mitkov Atanassov, Sergiu Radu Goma, Narayana Karthik Sadanandam Ravirala, Venkata Ravi Kiran Dayana, Karthikeyan Shanmugavadivelu
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Patent number: 10097747Abstract: A method of performing an image autofocus operation using multiple cameras includes performing, at an image processor, a first autofocus operation on a first region of interest in a scene captured by a first camera and determining a second region of interest in the scene captured by a second camera. The second region of interest is determined based on the first region of interest. The method further includes performing a second autofocus operation on the second region of interest. The method also includes fusing a first image of the scene captured by the first camera with a second image of the scene captured by the second camera to generate a fused image. The first image is based on the first autofocus operation and the second image is based on the second autofocus operation.Type: GrantFiled: October 21, 2015Date of Patent: October 9, 2018Assignee: QUALCOMM IncorporatedInventors: Venkata Ravi Kiran Dayana, Karthikeyan Shanmugavadivelu, Narayana Karthik Sadanandam Ravirala
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Patent number: 10061182Abstract: Method and systems for autofocus triggering focusing are disclosed herein. In one example, a system may include a lens, a memory component configured to store lens parameters of the lens and regions of focus corresponding to the lens parameters, and a processor coupled to the memory and the lens. The processor may be configured to focus the lens on a target object at a first instance of time, receive information indicative of distances from an imaging device to the target object over a period of time, obtain lens parameters of the lens, and determine a region of focus, and trigger the lens to re-focus on the target object if the distance to the target object indicates the target object is outside of the region of focus and the distance to the target object is unchanged for a designated time period.Type: GrantFiled: June 9, 2017Date of Patent: August 28, 2018Assignee: QUALCOMM IncorporatedInventors: Venkata Ravi Kiran Dayana, Karthikeyan Shanmugavadivelu, Shizhong Liu, Ying Chen Lou, Hung-Hsin Wu, Narayana Karthik Sadanandam Ravirala, Adarsh Abhay Golikeri
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Publication number: 20180160046Abstract: A method for displaying preview images is disclosed. In one aspect, the method includes: receiving first images captured by a first camera having a first field-of-view (FOV), receiving second images captured by a second camera having a second FOV that is different than the first FOV, and displaying preview images generated based on the first and second images. The method may further include determining a spatial transform based on depth information associated with individual pixels in the first and second images, and upon receiving instructions to zoom in or out beyond a camera switching threshold, modifying the second image using the spatial transform and displaying the first image and the modified second image consecutively.Type: ApplicationFiled: December 6, 2016Publication date: June 7, 2018Inventors: James Wilson Nash, Adarsh Abhay Golikeri, Narayana Karthik Sadanandam Ravirala
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Patent number: 9973722Abstract: Systems, devices, and methods of displaying and/or recording multiple pictures in a picture (PIP) on the same display of a digital display device are disclosed. The PIPs can show objects from the main field view of the display device, such as a front camera lens, as well as objects from a different field of view, such as a back camera lens. The PIPs can further track the objects that are being displayed.Type: GrantFiled: February 20, 2014Date of Patent: May 15, 2018Assignee: QUALCOMM IncorporatedInventors: Fan Deng, Karthikeyan Shanmugavadivelu, Wan Shun Vincent Ma, Narayana Karthik Sadanandam Ravirala, Lei Ma, Pengjun Huang, Shizhong Liu
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Patent number: 9838594Abstract: Methods and apparatuses for irregular-region based automatic image correction are disclosed. In one aspect, the method is operable by an imaging device including a touch sensor, for performing image correction. The method can include obtaining a first image of a scene and receiving, via the touch sensor, a touch input indicating a selected region of the first image and having a shape that corresponds to a shape of the selected region. The method can also include determining statistics indicating visual properties for the selected region, adjusting at least one image correction parameter of the imaging device based on the determined statistics and the shape of the touch input, and obtaining a second image of the scene based on the adjusted at least one image correction parameter of the imaging device.Type: GrantFiled: March 2, 2016Date of Patent: December 5, 2017Assignee: QUALCOMM IncorporatedInventors: Matthew Trusten, Narayana Karthik Sadanandam Ravirala, Adarsh Abhay Golikeri
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Publication number: 20170277018Abstract: Method and systems for autofocus triggering focusing are disclosed herein. In one example, a system may include a lens, a memory component configured to store lens parameters of the lens and regions of focus corresponding to the lens parameters, and a processor coupled to the memory and the lens. The processor may be configured to focus the lens on a target object at a first instance of time, receive information indicative of distances from an imaging device to the target object over a period of time, obtain lens parameters of the lens, and determine a region of focus, and trigger the lens to re-focus on the target object if the distance to the target object indicates the target object is outside of the region of focus and the distance to the target object is unchanged for a designated time period.Type: ApplicationFiled: June 9, 2017Publication date: September 28, 2017Inventors: Venkata Ravi Kiran Dayana, Karthikeyan Shanmugavadivelu, Shizhong Liu, Ying Chen Lou, Hung-Hsin Wu, Narayana Karthik Sadanandam Ravirala, Adarsh Abhay Golikeri
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Publication number: 20170257557Abstract: Methods and apparatuses for irregular-region based automatic image correction are disclosed. In one aspect, the method is operable by an imaging device including a touch sensor, for performing image correction. The method can include obtaining a first image of a scene and receiving, via the touch sensor, a touch input indicating a selected region of the first image and having a shape that corresponds to a shape of the selected region. The method can also include determining statistics indicating visual properties for the selected region, adjusting at least one image correction parameter of the imaging device based on the determined statistics and the shape of the touch input, and obtaining a second image of the scene based on the adjusted at least one image correction parameter of the imaging device.Type: ApplicationFiled: March 2, 2016Publication date: September 7, 2017Inventors: Matthew Trusten, Narayana Karthik Sadanandam Ravirala, Adarsh Abhay Golikeri
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Publication number: 20170230585Abstract: Devices and methods for providing seamless preview images for multi-camera devices having two or more asymmetric cameras. A multi-camera device may include two asymmetric cameras disposed to image a target scene. The multi-camera device further includes a processor coupled to a memory component and a display, the processor configured to retrieve an image generated by a first camera from the memory component, retrieve an image generated by a second camera from the memory component, receive input corresponding to a preview zoom level, retrieve spatial transform information and photometric transform information from memory, modify at least one image received from the first and second cameras by the spatial transform and the photometric transform, and provide on the display a preview image comprising at least a portion of the at least one modified image and a portion of either the first image or the second image based on the preview zoom level.Type: ApplicationFiled: February 8, 2016Publication date: August 10, 2017Inventors: James Wilson Nash, Kalin Mitkov Atanassov, Sergiu Radu Goma, Narayana Karthik Sadanandam Ravirala, Venkata Ravi Kiran Dayana, Karthikeyan Shanmugavadivelu
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Patent number: 9703175Abstract: Method and systems for autofocus triggering focusing are disclosed herein. In one example, a system may include a lens, a memory component configured to store lens parameters of the lens and regions of focus corresponding to the lens parameters, and a processor coupled to the memory and the lens. The processor may be configured to focus the lens on a target object at a first instance of time, receive information indicative of distances from an imaging device to the target object over a period of time, obtain lens parameters of the lens, and determine a region of focus, and trigger the lens to re-focus on the target object if the distance to the target object indicates the target object is outside of the region of focus and the distance to the target object is unchanged for a designated time period.Type: GrantFiled: July 2, 2015Date of Patent: July 11, 2017Assignee: QUALCOMM IncorporatedInventors: Venkata Ravi Kiran Dayana, Karthikeyan Shanmugavadivelu, Shizhong Liu, Ying Chen Lou, Hung-Hsin Wu, Narayana Karthik Sadanandam Ravirala, Adarsh Abhay Golikeri
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Publication number: 20170118393Abstract: A method of performing an image autofocus operation using multiple cameras includes performing, at an image processor, a first autofocus operation on a first region of interest in a scene captured by a first camera and determining a second region of interest in the scene captured by a second camera. The second region of interest is determined based on the first region of interest. The method further includes performing a second autofocus operation on the second region of interest. The method also includes fusing a first image of the scene captured by the first camera with a second image of the scene captured by the second camera to generate a fused image. The first image is based on the first autofocus operation and the second image is based on the second autofocus operation.Type: ApplicationFiled: October 21, 2015Publication date: April 27, 2017Inventors: Venkata Ravi Kiran Dayana, Karthikeyan Shanmugavadivelu, Narayana Karthik Sadanandam Ravirala
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Publication number: 20170003573Abstract: Method and systems for autofocus triggering focusing are disclosed herein. In one example, a system may include a lens, a memory component configured to store lens parameters of the lens and regions of focus corresponding to the lens parameters, and a processor coupled to the memory and the lens. The processor may be configured to focus the lens on a target object at a first instance of time, receive information indicative of distances from an imaging device to the target object over a period of time, obtain lens parameters of the lens, and determine a region of focus, and trigger the lens to re-focus on the target object if the distance to the target object indicates the target object is outside of the region of focus and the distance to the target object is unchanged for a designated time period.Type: ApplicationFiled: July 2, 2015Publication date: January 5, 2017Inventors: Venkata Ravi Kiran Dayana, Karthikeyan Shanmugavadivelu, Shizhong Liu, Ying Chen Lou, Hung-Hsin Wu, Narayana Karthik Sadanandam Ravirala, Adarsh Abhay Golikeri
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Publication number: 20160295097Abstract: Exemplary embodiments are directed to dual camera autofocusing in digital cameras with error detection. An auxiliary lens and image sensor shares a housing with a main lens and image sensor which together act as a range finder to determine the distance to a scene. Scene distance is used in combination with contrast-detection autofocus to achieve maximum sharpness in the image. Errors in distance determination may be found and corrected using a comparison of data collected from the auxiliary lens and main lens.Type: ApplicationFiled: March 31, 2015Publication date: October 6, 2016Inventors: Karthikeyan Shanmugavadivelu, Hung-Hsin Wu, Shizhong Liu, Narayana Karthik Sadanandam Ravirala, Venkata Ravi Kiran Dayana, Adarsh Abhay Golikeri
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Publication number: 20160227100Abstract: Systems and methods for rapid automatic focus, automatic white balance, and automatic exposure control are disclosed. To reduce the time it takes to automatically focus, balance spectra, and set exposure period, a dual camera uses an auxiliary camera and auxiliary image processing module in addition to the main camera and main image processing module. The auxiliary camera may capture lower resolution and lower frame rate imagery that is processed by an auxiliary image processing module to determine focus, white balance, and exposure periods for the main camera and main image processing module. By initiating convergence for automatic focus (AF), automatic white balance (AWB) and automatic exposure control (AEC) before receiving a command to capture imagery, and processing lower resolution and lower frame rate imagery, AF, AWB, and AEC convergence delays are reduced for both standard and high dynamic range image capture.Type: ApplicationFiled: January 29, 2015Publication date: August 4, 2016Inventors: Shizhong Liu, Hung-Hsin Wu, Venkata Ravi Kiran Dayana, Narayana Karthik Sadanandam Ravirala, Yonggui Mao, Karthikeyan Shanmugavadivelu
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Publication number: 20150062434Abstract: Systems, devices, and methods of displaying and/or recording multiple pictures in a picture (PIP) on the same display of a digital display device are disclosed. The PIPs can show objects from the main field view of the display device, such as a front camera lens, as well as objects from a different field of view, such as a back camera lens. The PIPs can further track the objects that are being displayed.Type: ApplicationFiled: February 20, 2014Publication date: March 5, 2015Applicant: QUALCOMM IncorporatedInventors: Fan Deng, Karthikeyan Shanmugavadivelu, Wan Shun Vincent Ma, Narayana Karthik Sadanandam Ravirala, Lei Ma, Pengjun Huang, Shizhong Liu
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Patent number: 8599290Abstract: Descriptions are provided of various implementations of an automated tuning process configured to optimize a procedure for post-processing images captured by a camera sensor.Type: GrantFiled: November 12, 2012Date of Patent: December 3, 2013Assignee: QUALCOMM IncorporatedInventors: Victor Hokkiu Chan, Narayana Karthik Sadanandam Ravirala