公开(公告)号：ZA202007420B

公开(公告)日：2021-09-29

申请号：ZA202007420

申请日：2020-11-27

Applicant: HOFFMANN LA ROCHE

Inventor： BERG MAX ,  KLEIN TIMO

Abstract: A method for calibrating a camera of a mobile device for detecting an analyte in a sample. An image of an object is captured using the camera with an illumination source turned on. A first area is determined in the image which is affected by direct reflection of light originating from the illumination source and reflected by the object. A second area which does not substantially overlap with the first area is determined as a target area of a test strip. Also disclosed is a detection in which a sample is applied to a test strip and a visual indication is provided to position the test strip relative to the camera to thereby locate the test field of the strip in the target area. An image of the test field is captured using the camera while the illumination source is turned on, and analyte concentration is determined from the image.

公开(公告)号：SG11202105428WA

公开(公告)日：2021-06-29

申请号：SG11202105428W

申请日：2019-11-29

Applicant: HOFFMANN LA ROCHE

Inventor： LIMBURG BERND ,  BERG MAX ,  HAILER FREDRIK ,  TUERCK VOLKER ,  SKURIDINA DARIA ,  OSTAPENKO IRINA

IPC: G01N21/84

Abstract: A method of determining analyte concentration in a body fluid with a mobile device having a camera. A user is prompted to apply body fluid to an optical test strip and then waits a predetermined minimum waiting time. The camera captures an image of part of the test field having the body fluid applied thereto. Analyte concentration is determined based on the image captured. The determination includes estimating a point in time of sample application to the test field by taking into account time-dependent information derived from the image captured using a first color channel of a color space. The determination also estimates the concentration of the analyte by taking into account concentration-dependent information derived from the image using a second color channel of the color space.

公开(公告)号：SG11202012158SA

公开(公告)日：2021-01-28

申请号：SG11202012158S

申请日：2019-06-05

Applicant: HOFFMANN LA ROCHE

Inventor： BERG MAX ,  HAILER FREDRIK ,  KLEIN TIMO ,  LIMBURG BERND ,  TUERCK VOLKER ,  MELCHINGER CHRISTIAN

IPC: G01N21/84

Abstract: A method (110) for evaluating a suitability of lighting conditions for detecting an analyte in a sample using a camera (112) of a mobile device (114) is disclosed. The method comprising the following steps:a) (117) capturing at least one first image of at least one test strip (116), wherein the test strip (116) is adapted for detecting the analyte in the sample, the test strip (116) having at least one test field (118) comprising at least one test chemical for performing an optical detection reaction in the presence of the analyte, wherein, during the capturing of the first image, an illumination source (120) of the mobile device (114) is turned off;b) (122) capturing at least one second image of the test strip (116), wherein, during the capturing of the second image, the illumination source (120) of the mobile device (114) is turned on;c) (124) comparing the first and second images captured in steps a) (117) and b) (122), thereby determining a difference in lighting conditions between the first image and the second image; andd) (126) deriving at least one suitability information from the comparison in step c) (124), wherein the suitability information comprises information on a suitability of the lighting conditions for analyte detection.

公开(公告)号：AU2019284820A1

公开(公告)日：2020-12-10

申请号：AU2019284820

申请日：2019-06-05

Applicant: HOFFMANN LA ROCHE

Inventor： BERG MAX ,  HAILER FREDRIK ,  KLEIN TIMO ,  LIMBURG BERND ,  TUERCK VOLKER ,  MELCHINGER CHRISTIAN

IPC: G01N21/84

Abstract: A method (110) for evaluating a suitability of lighting conditions for detecting an analyte in a sample using a camera (112) of a mobile device (114) is disclosed. The method comprising the following steps: a) (117) capturing at least one first image of at least one test strip (116), wherein the test strip (116) is adapted for detecting the analyte in the sample, the test strip (116) having at least one test field (118) comprising at least one test chemical for performing an optical detection reaction in the presence of the analyte, wherein, during the capturing of the first image, an illumination source (120) of the mobile device (114) is turned off; b) (122) capturing at least one second image of the test strip (116), wherein, during the capturing of the second image, the illumination source (120) of the mobile device (114) is turned on; c) (124) comparing the first and second images captured in steps a) (117) and b) (122), thereby determining a difference in lighting conditions between the first image and the second image; and d) (126) deriving at least one suitability information from the comparison in step c) (124), wherein the suitability information comprises information on a suitability of the lighting conditions for analyte detection.

公开(公告)号：MA51798A

公开(公告)日：2020-06-17

申请号：MA51798

申请日：2018-12-21

Applicant: HOFFMANN LA ROCHE ,  ROCHE DIABETES CARE GMBH

Inventor： AYSIN BENHUR ,  BERG MAX ,  CHITTAJALLU DIVA ,  HAILER FREDRIK ,  LIMBURG BERND ,  SEELIG PETER ,  SIEFFERT DANIEL ,  WIEDER HERBERT

IPC: G01N21/84

公开(公告)号：CA3119666A1

公开(公告)日：2020-06-04

申请号：CA3119666

申请日：2019-11-29

Applicant: HOFFMANN LA ROCHE

Inventor： LIMBURG BERND ,  BERG MAX ,  HAILER FREDRIK ,  TUERCK VOLKER ,  SKURIDINA DARIA ,  OSTAPENKO IRINA

IPC: G01N21/84

Abstract: A method of determining a concentration of an analyte in a bodily fluid by using a mobile device (110) having a camera (112) is proposed. The method comprises the following steps: a) prompting a user to one or more of - apply a drop of bodily fluid to at least one test field (114) of an optical test strip (116), or - confirm an application of a drop of bodily fluid to at least one test field (114) of an optical test strip (116); b) waiting for a predetermined minimum amount of waiting time; c) capturing at least one image of at least one part of the test field (114), with the test field (114) having the drop of bodily fluid applied thereto, by using the camera (112); d) determining the concentration of the analyte in the bodily fluid based on the image captured in step c), comprising: i) estimating a point in time of sample application to the test field (114), by taking into account at least one first item of information derived from the image captured in step c) by using at least one first color channel of a color space, wherein the first item of information is time-dependent; and ii) estimating the concentration of the analyte in the bodily fluid, by taking into account at least one second item of information derived from the image by using at least one second color channel of the color space, wherein the second item of information is concentration-dependent.

公开(公告)号：SG11202003611XA

公开(公告)日：2020-05-28

申请号：SG11202003611X

申请日：2018-10-23

Applicant: HOFFMANN LA ROCHE

Inventor： LIMBURG BERND ,  BERG MAX

IPC: G01N21/84 ,  G01J3/46 ,  G01N21/93

Abstract: A method for evaluating the suitability of a mobile device (112) having at least one camera (122) for the purpose of performing an analytical measurement based on a color formation reaction is disclosed. The method comprises: a) providing the at least one mobile device (112) having the at least one camera (122); b) providing at least one object (114) having at least one reference color field (116); c) taking at least one image (123) of at least part of the reference color field (116) by using the camera (122); and d) deriving at least one item of color resolution information by using the image (123).

公开(公告)号：AU2018356385A1

公开(公告)日：2020-04-23

申请号：AU2018356385

申请日：2018-10-24

Applicant: HOFFMANN LA ROCHE

Inventor： LIMBURG BERND ,  BERG MAX

IPC: G01N21/78 ,  G01N21/84 ,  G06T7/80

Abstract: A method for evaluating the suitability of a mobile device (112) for performing an analytical measurement is disclosed. The mobile device (112) has at least one camera (122). The method comprises: a) providing the at least one mobile device (112) having the at least one camera (122); b) providing at least one reference object (114) having at least one predefined spatial extension (116) in at least one spatial dimension (126); c) taking at least one image (124) of at least part of the reference object (114) by using the camera (122); and d) deriving at least one item of spatial resolution information by using the image, wherein the at least one item of spatial resolution information comprises one or more numerical values, which quantify the capability of the camera of resolving two or more objects in the image.

公开(公告)号：CA3104213A1

公开(公告)日：2020-01-09

申请号：CA3104213

申请日：2019-07-03

Applicant: HOFFMANN LA ROCHE

Inventor： BERG MAX ,  WETZEL SIMON ,  SIEFFERT DANIEL ,  WINKELNKEMPER MOMME ,  TUERCK VOLKER

IPC: G01N21/84

Abstract: A method, a computer program and devices for detecting at least one analyte in at least one sample (114) is disclosed. The method comprising: a) providing at least one mobile device (112) having at least one camera (118) and at least one illumination source (120); b) providing at least one test strip (116) having at least one test field (124), the test field comprising at least one test chemical (126) for performing an optical detection reaction in the presence of the analyte; c) applying the at least one sample (114) to the test field (124); d) capturing a plurality of images (142) of at least one region (144) of the test strip (116), the region (144) comprising at least a part of the test field (124) to which the sample (114) is applied, comprising d1) capturing at least one image (142) before applying the sample (114) to the test field (124), with the illumination source (120) turned off; d2) capturing at least one image (142) before applying the sample (114) to the test field (124), with the illumination source (120) turned on; and d3) capturing at least one image (142) after applying the sample (114) to the test field (124); e) determining a concentration of the analyte in the sample (114) by using the images (142) captured in step d).

公开(公告)号：CA3102183A1

公开(公告)日：2019-12-19

申请号：CA3102183

申请日：2019-06-05

Applicant: HOFFMANN LA ROCHE

Inventor： BERG MAX ,  HAILER FREDRIK ,  KLEIN TIMO ,  LIMBURG BERND ,  TUERCK VOLKER ,  MELCHINGER CHRISTIAN

IPC: G01N21/84

Abstract: A method (110) for evaluating a suitability of lighting conditions for detecting an analyte in a sample using a camera (112) of a mobile device (114) is disclosed. The method comprising the following steps: a) (117) capturing at least one first image of at least one test strip (116), wherein the test strip (116) is adapted for detecting the analyte in the sample, the test strip (116) having at least one test field (118) comprising at least one test chemical for performing an optical detection reaction in the presence of the analyte, wherein, during the capturing of the first image, an illumination source (120) of the mobile device (114) is turned off; b) (122) capturing at least one second image of the test strip (116), wherein, during the capturing of the second image, the illumination source (120) of the mobile device (114) is turned on; c) (124) comparing the first and second images captured in steps a) (117) and b) (122), thereby determining a difference in lighting conditions between the first image and the second image; and d) (126) deriving at least one suitability information from the comparison in step c) (124), wherein the suitability information comprises information on a suitability of the lighting conditions for analyte detection.