Darren O.

Darren O.

Boulder, Colorado, United States
4K followers 500+ connections

About

Darren Odom is a computer vision and business intelligence thought leader. Darren's…

Education

Publications

  • Pelagic Nekton Abundance and Distribution in the Northern Sacramento–San Joaquin Delta, California

    Transactions of the American Fisheries Society

    Knowledge of the habitats occupied by species is fundamental for the development of effective conservation and management actions. The collapse of pelagic fish species in the Sacramento–San Joaquin Delta, California, has triggered a need to better understand factors that drive their distribution and abundance. A study was conducted in summer–fall 2014 in an attempt to identify physical and biological habitat conditions that drive the abundance and distribution of pelagic species in the northern…

    Knowledge of the habitats occupied by species is fundamental for the development of effective conservation and management actions. The collapse of pelagic fish species in the Sacramento–San Joaquin Delta, California, has triggered a need to better understand factors that drive their distribution and abundance. A study was conducted in summer–fall 2014 in an attempt to identify physical and biological habitat conditions that drive the abundance and distribution of pelagic species in the northern region of the system. The study was conducted in the three largest channels in the northern Sacramento–San Joaquin Delta by dimension, volume, and flow capacity. The pelagic community was dominated by three nonnative species, Siberian prawn Exopalaemon modestus, which comprised 56% of the total number of organisms, and two fish species, Threadfin Shad Dorosoma petenense and Mississippi Silversides Menidia audens, which together comprised 43% of the total number of organisms. Total fish and total shrimp abundance were sensitive to the most extreme values of turbidity and temperature encountered and positively associated with total zooplankton biomass. The results suggested that habitat conditions in terminal channels, historically a common feature on the landscape, support higher abundances of pelagic species and zooplankton than open-ended channels. These results provide resource managers with useful information on the habitat associations of pelagic species and on how the future distribution and abundance of pelagic species will likely change in response to climate or other ecological factors.

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  • SmeltCam: Underwater Video Codend for Trawled Nets with an Application to the Distribution of the Imperiled Delta Smelt

    PLOS ONE

    Studying rare and sensitive species is a challenge in conservation biology. The problem is exemplified by the case of the imperiled delta smelt Hypomesus transpacificus, a small delicate fish species endemic to the San Francisco Estuary, California. Persistent record-low levels of abundance and relatively high sensitivity to handling stress pose considerable challenges to studying delta smelt in the wild. To attempt to overcome these and other challenges we have developed the SmeltCam, an…

    Studying rare and sensitive species is a challenge in conservation biology. The problem is exemplified by the case of the imperiled delta smelt Hypomesus transpacificus, a small delicate fish species endemic to the San Francisco Estuary, California. Persistent record-low levels of abundance and relatively high sensitivity to handling stress pose considerable challenges to studying delta smelt in the wild. To attempt to overcome these and other challenges we have developed the SmeltCam, an underwater video camera codend for trawled nets. The SmeltCam functions as an open-ended codend that automatically collects information on the number and species of fishes that pass freely through a trawled net without handling. We applied the SmeltCam to study the fine-scale distribution of juvenile delta smelt in the water column in the upper San Francisco Estuary. We learned that during flood tides delta smelt were relatively abundant throughout the water column and that during ebb tides delta smelt were significantly less abundant and occurred only in the lower half and sides of the water column. The results suggest that delta smelt manipulate their position in the water column to facilitate retention in favorable habitats. With the application of the SmeltCam we increased the survival of individual delta smelt by 72% compared to using a traditional codend, where all of the fish would have likely died due to handling stress. The SmeltCam improves upon similar previously developed silhouette photography or video recording devices and demonstrates how new technology can be developed to address important questions in conservation biology as well as lessen the negative effects associated with traditional sampling methods on imperiled species.

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Patents

  • Smart vision sensor system and method

    Issued US11138415B2

    The system includes a detection unit configured to obtain sensor data of an environment (e.g., a massage therapy facility, a doctor's office, etc.), where the sensor data relates to the movements and actions of a first individual (e.g., a practitioner) and/or a second individual (e.g., the practitioner's patent) in relation to each other. The system is used to monitor the actions of the individuals so as to detect inappropriate behavior by the first individual and/or the second individual…

    The system includes a detection unit configured to obtain sensor data of an environment (e.g., a massage therapy facility, a doctor's office, etc.), where the sensor data relates to the movements and actions of a first individual (e.g., a practitioner) and/or a second individual (e.g., the practitioner's patent) in relation to each other. The system is used to monitor the actions of the individuals so as to detect inappropriate behavior by the first individual and/or the second individual (e.g., inappropriate touching or hand placement, groping, etc.). The system can be configured to detect inappropriate behavior without capturing personally identifying images and/or videos of the individuals.

    See patent
  • HERMETICALLY SEALED CAMERA WITH A GRAPHICAL PROCESSING UNIT

    Issued US US10652440B2

    A camera system includes a hermetically sealed housing, wherein the hermetically sealed housing comprises an external heat sink integrated with the hermetically sealed housing. The camera system further includes a first camera disposed within the hermetically sealed housing. The first camera includes a lens, and a motor, wherein the motor is to physically adjust the lens. The camera system further includes a graphics processing unit (GPU) coupled to the camera and disposed within…

    A camera system includes a hermetically sealed housing, wherein the hermetically sealed housing comprises an external heat sink integrated with the hermetically sealed housing. The camera system further includes a first camera disposed within the hermetically sealed housing. The first camera includes a lens, and a motor, wherein the motor is to physically adjust the lens. The camera system further includes a graphics processing unit (GPU) coupled to the camera and disposed within the hermetically sealed housing. The GPU processes image information of an image captured by the first camera, wherein the external heat sink is to absorb heat generated by the GPU.

    See patent
  • Endoscopic Instrument for Tissue Identification

    Issued US 8221418

    The present disclosure relates to various apparatus, systems and methods of identifying and treating tissue using at least one electrical property of tissue. Provided is a method for identifying and treating tissue, the method including providing a electrosurgical treatment device including an electrode assembly for measuring one or more electrical properties of a target tissue, the electrode assembly being mounted on a distal end thereof, measuring the one or more electrical characteristics of…

    The present disclosure relates to various apparatus, systems and methods of identifying and treating tissue using at least one electrical property of tissue. Provided is a method for identifying and treating tissue, the method including providing a electrosurgical treatment device including an electrode assembly for measuring one or more electrical properties of a target tissue, the electrode assembly being mounted on a distal end thereof, measuring the one or more electrical characteristics of the target tissue, comparing the measured electrical property values of the target tissue against electrical property values of known tissue types, identifying a tissue type of the target tissue, adjusting an energy delivery configuration of the electrosurgical treatment device to the type of target tissue, and activating the electrosurgical treatment device to treat the target tissue.

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  • System and method for controlling electrode gap during tissue sealing

    Issued US 8128625

    An electrosurgical system for sealing tissue is disclosed that includes an electrosurgical forceps. The forceps includes a drive rod and an end effector assembly coupled to the drive rod at a distal end thereof. The end effector assembly includes jaw members wherein longitudinal reciprocation of the drive rod moves the jaw members from a first position in spaced relation relative to one another to a subsequent position wherein the jaw members cooperate to grasp tissue therebetween. Each of the…

    An electrosurgical system for sealing tissue is disclosed that includes an electrosurgical forceps. The forceps includes a drive rod and an end effector assembly coupled to the drive rod at a distal end thereof. The end effector assembly includes jaw members wherein longitudinal reciprocation of the drive rod moves the jaw members from a first position in spaced relation relative to one another to a subsequent position wherein the jaw members cooperate to grasp tissue therebetween. Each of the jaw members includes a sealing plate that communicates electrosurgical energy through tissue held therebetween. The jaw members are adapted to connect to an electrosurgical generator. The system also includes one or more sensors that determine a gap distance between the sealing plates of the jaw members and a pressure applicator coupled to the drive rod. The pressure applicator is configured to move the drive rod in a longitudinal direction. The system further includes a controller adapted to communicate with the sensors and to control the pressure applicator in response to the determined gap distance during the sealing process.

    See patent
  • System and method for measuring initial tissue impedance

    Issued US 8034049

    An electrosurgical system and method are disclosed. The system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The generator is further adapted to supply an electrical signal having at least one substantially constant value to tissue to determine initial tissue impedance response. The generator includes sensor circuitry adapted to continuously monitor initial tissue impedance response, wherein the initial tissue impedance response includes one of an…

    An electrosurgical system and method are disclosed. The system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The generator is further adapted to supply an electrical signal having at least one substantially constant value to tissue to determine initial tissue impedance response. The generator includes sensor circuitry adapted to continuously monitor initial tissue impedance response, wherein the initial tissue impedance response includes one of an initial impedance, an impedance drop, an impedance minimum and a first impedance rise. The generator also includes a microprocessor adapted to generate at least one tissue parameter based as a function of the initial impedance, the impedance drop, the impedance minimum and the first impedance rise. The system also includes an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue for treatment.

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  • Switch mechanisms for safe activation of energy on an electrosurgical instrument

    Issued US 7837685

    Various safe switching mechanisms are provided for use with electrosurgical instruments which prevent arcing between the high-energy contacts as the high-energy source is activated. The switching mechanisms generally include a pair of high-energy contacts and a pair of activation contacts. An actuator is provided which initially engages the high-energy contacts in advance of engagement of the activation contacts to prevent arcing and subsequently disengages the activation contacts in advance of…

    Various safe switching mechanisms are provided for use with electrosurgical instruments which prevent arcing between the high-energy contacts as the high-energy source is activated. The switching mechanisms generally include a pair of high-energy contacts and a pair of activation contacts. An actuator is provided which initially engages the high-energy contacts in advance of engagement of the activation contacts to prevent arcing and subsequently disengages the activation contacts in advance of the high-energy contacts as the energy source is deactivated. A method of switching power to an electrosurgical instrument while avoiding damage to high-energy contacts is also disclosed.

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  • System and method for controlling RF output during tissue sealing

    Issued US 7731717

    An electrosurgical system for sealing tissue is disclosed which includes an electrosurgical forceps having a shaft member and a jaw member disposed at a distal end thereof. The jaw members are movable from a first position in spaced relation relative to one another to at least one subsequent position wherein the jaw members cooperate to grasp tissue therebetween. Each of the jaw members including a sealing plate which communicates electrosurgical energy through tissue held therebetween. The jaw…

    An electrosurgical system for sealing tissue is disclosed which includes an electrosurgical forceps having a shaft member and a jaw member disposed at a distal end thereof. The jaw members are movable from a first position in spaced relation relative to one another to at least one subsequent position wherein the jaw members cooperate to grasp tissue therebetween. Each of the jaw members including a sealing plate which communicates electrosurgical energy through tissue held therebetween. The jaw members are adapted to connect to an electrosurgical generator. The system also includes one or more sensors which determine a gap distance between the sealing plates of the jaw members and a microprocessor which is adapted to communicate with the sensor and measure an initial gap distance between the sealing plates as well as to generate a desired gap distance trajectory based on the initial gap distance. The microprocessor is further adapted to communicate with the at least one sensor in real time to adjust output level of the electrosurgical generator as a function of the measured gap distance during the sealing process.

    See patent
  • Electrosurgical forceps with slow closure sealing plates and method of sealing tissue

    Issued US 7491202

    An Electrosurgical bipolar forceps for sealing tissue is disclosed which includes at least one shaft member having a jaw member disposed at a distal end thereof. The jaw members are movable from a first position in spaced relation relative to one another to at least one subsequent position wherein the jaw members cooperate to grasp tissue therebetween. Each of the jaw members including a sealing plate which communicates electrosurgical energy through tissue held therebetween. At least one of…

    An Electrosurgical bipolar forceps for sealing tissue is disclosed which includes at least one shaft member having a jaw member disposed at a distal end thereof. The jaw members are movable from a first position in spaced relation relative to one another to at least one subsequent position wherein the jaw members cooperate to grasp tissue therebetween. Each of the jaw members including a sealing plate which communicates electrosurgical energy through tissue held therebetween. At least one of the sealing plates includes one or more adjustable stop members coupled to one or more controllers. The adjustable stop member(s) are adapted for separating the sealing plates by a predetermined gap distance and the controller(s) adapted for adjusting the adjustable stop member(s) to close the sealing plates at a predetermined rate.

    See patent
  • System and method for tissue sealing

    Filed US 12/481,087

    An electrosurgical bipolar forceps for sealing is disclosed. The forceps includes one or more shaft members having an end effector assembly disposed at the distal end. The end effector assembly includes two jaw members movable from a first position to a closed position wherein the jaw members cooperate to grasp tissue at constant pressure. Each of the jaw members includes an electrically conductive sealing plate connected to a first energy source which communicates electrosurgical energy…

    An electrosurgical bipolar forceps for sealing is disclosed. The forceps includes one or more shaft members having an end effector assembly disposed at the distal end. The end effector assembly includes two jaw members movable from a first position to a closed position wherein the jaw members cooperate to grasp tissue at constant pressure. Each of the jaw members includes an electrically conductive sealing plate connected to a first energy source which communicates electrosurgical energy through the tissue held therebetween. The electrosurgical energy is communicated at constant voltage. The electrically conductive sealing plates are operably connected to sensor circuitry which is configured to measure initial tissue impedance and transmit an initial impedance value to a controller. The controller determines the constant pressure and the constant voltage to be applied to the tissue based on the initial impedance value.

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  • Electrosurgical Instrument Including a Sensor

    Filed US 12/195,624

    An electrosurgical system includes an electrosurgical generator, an electrosurgical instrument, an optical clarity sensor and a control component. The electrosurgical generator generates electrosurgical energy for use during electrosurgery. The electrosurgical instrument is coupled to the electrosurgical generator and treats tissue. The optical clarity sensor is coupled to the electrosurgical generator and is adapted to measure tissue with at least two optical frequencies. The control component…

    An electrosurgical system includes an electrosurgical generator, an electrosurgical instrument, an optical clarity sensor and a control component. The electrosurgical generator generates electrosurgical energy for use during electrosurgery. The electrosurgical instrument is coupled to the electrosurgical generator and treats tissue. The optical clarity sensor is coupled to the electrosurgical generator and is adapted to measure tissue with at least two optical frequencies. The control component is operatively coupled to the optical clarity sensor and receives sensor data therefrom. The control component communicates control instructions to the electrosurgical generator to control the generation of the electrosurgical energy.

    See patent
  • Adjustable impedance electrosurgical electrodes

    Filed US 11/801,448

    An electrosurgical system is disclosed. The electrosurgical system includes at least one electrosurgical electrode having a resistive element and a capacitive element configured in series. The electrosurgical system also including an electrosurgical generator configured to generate electrosurgical energy having a first frequency which generates a first impedance in the at least one electrode due to capacitive reactance of the capacitive element in series. The generator is further configured to…

    An electrosurgical system is disclosed. The electrosurgical system includes at least one electrosurgical electrode having a resistive element and a capacitive element configured in series. The electrosurgical system also including an electrosurgical generator configured to generate electrosurgical energy having a first frequency which generates a first impedance in the at least one electrode due to capacitive reactance of the capacitive element in series. The generator is further configured to adjust the first frequency to at least one other frequency to generate a different impedance in the at least one electrode due to capacitive reactance of the capacitive element in series, thereby adjusting the temperature of at least one electrosurgical electrode.

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  • Vessel sealing instrument with pre-heated electrodes

    Filed US 11/487,297

    An electrode assembly having a pair of opposing first and second jaw members is provided. Each jaw member includes an electrically conductive tissue sealing surface extending along a length thereof, each tissue sealing surface is adapted to connect to a source of electrosurgical energy such that the tissue sealing surfaces are capable of conducting electrosurgical energy through tissue held therebetween to effect a seal. The assembly includes at least one heating element disposed within at…

    An electrode assembly having a pair of opposing first and second jaw members is provided. Each jaw member includes an electrically conductive tissue sealing surface extending along a length thereof, each tissue sealing surface is adapted to connect to a source of electrosurgical energy such that the tissue sealing surfaces are capable of conducting electrosurgical energy through tissue held therebetween to effect a seal. The assembly includes at least one heating element disposed within at least one of the jaw members. The heating element is configured to pre-heat the electrically conductive tissue sealing surfaces before electrosurgical energy is applied.

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  • Bipolar forceps with multiple electrode array end effector assembly

    Filed US 11/225,260

    A bipolar electrosurgical forceps includes first and second opposing jaw members having respective inwardly facing surfaces associated therewith. The first and second jaw members are adapted for relative movement between an open position to receive tissue and a closed position engaging tissue between the inwardly facing surfaces. The first and second jaw members each include a plurality of electrodes on the inwardly facing surfaces. The plurality of electrodes of the first jaw member are…

    A bipolar electrosurgical forceps includes first and second opposing jaw members having respective inwardly facing surfaces associated therewith. The first and second jaw members are adapted for relative movement between an open position to receive tissue and a closed position engaging tissue between the inwardly facing surfaces. The first and second jaw members each include a plurality of electrodes on the inwardly facing surfaces. The plurality of electrodes of the first jaw member are disposed in substantially vertical registration with the plurality of electrodes of the second jaw member. Each of the plurality of electrodes is configured to connect to a source of electrosurgical energy. Electrodes on at least one jaw member are grouped in pairs and each respective pair aligns with at least one electrode on the opposite jaw member. A multiplexer controls current density or activation sequence of the electrosurgical energy to each electrode.

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Projects

  • Multi-axis rotary optical measurement platform

    - Present

    Development of the software and electrical subsystems of an optical measurement platform. Project specifics are confidential. Software utilizes machine vision, high dynamic range image processing, and motion control to capture and analyze specific optical measurements in low light conditions. User interface is a web-enabled, touch-enabled implementation based around NI LabVIEW.

    Other creators
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  • High power UV LED driver, firmware, and user interface

    - Present

    Development of a 1000W liquid-cooled UV LED driver for a leading manufacturer of UV curing equipment. The project combines extremely high efficiency ultraviolet LED technology with a state of the art LED driver designed by Sureworks, a custom MODBUS-enabled firmware, and a graphical user interface. Initial phases of prototype complete, moving into production.

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  • Smeltcam underwater fish counting and identification platform

    - Present

    US Bureau of Reclamation - sponsored project to develop a tow-able replacement for traditional net sampling of endangered pelagic fish. The platform allows a fish to swim freely though a net while capturing the fish's image. Imagery is processed real-time, image recognition and intelligent statistical models are employed to determine the count and fish species as it safely exits the net. The platform is being used this fall to sample delta smelt in the Sacramento Delta.

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  • Multiple communication protocol test fixture

    -

    Development of two test fixtures for an automated test of several industrial communication devices. Software measures analog, digital I/O, temperature, and communication via Profibus DP/PA, Fieldbus, MODBUS, and HART protocols. Power cycling, power input selection of several source types, and data logging.
    Developed in LabVIEW using NI PXI Hardware and third party hardware. Programmed, built, and tested at Sureworks.

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