Color-based reaction testing of biological materials
A biological material test strip and adjacently-located reference color chart are affixed to a lid portion of an all-in-one specimen cup to perform color-based reaction testing of collected biological specimens in an uncalibrated environment. After specimen collection, the lid portion is secured to a container portion of the specimen cup. The cup may then be rotated into an upside down position causing the specimen, under the force of gravity, to pass from the container portion and into a volume of the lid portion, such that the test strip is exposed to the specimen as it is received into the volume of the lid portion. An image of the exposed test strip and adjacently-located reference color chart may then be captured and processed to identify any color matches between the individual test pads on the test strip and the corresponding sequences of reference color blocks on the reference chart.
1. An electronic device comprising:
a memory programmed with processor-executable instructions, including a nontransitory computer readable diagnostic client for performing color-based reaction testing of biological materials; and
a processor electrically coupled to the memory, the instructions cause the processor to execute the diagnostic client to:
capture digital image information of an exposed test strip and of a reference color chart, wherein the digital image information of each of the exposed test strip and the reference color chart is captured in the same uncalibrated environment, wherein the exposed test strip comprises a plurality of test pads, and wherein further the reference color chart comprises a plurality of color blocks,
locate first image data within the digital image information corresponding to each of the plurality of test pads, said first image data having uncalibrated color information,
locate second image data within the digital image information corresponding to each of the plurality of color blocks on the reference color chart, said second image data having uncalibrated color information,
match uncalibrated color information from the first image data to corresponding uncalibrated color information from the second image data, wherein said matching comprises comparing uncalibrated color information corresponding to a first test pad of the plurality of test pads to uncalibrated color information from at least one of the plurality of color blocks on the reference color chart,
generate test results based on said matching, and
display, on a display screen of the electronic device, a graphical representation of the test results indicating an absence, presence and degree of presence of a reactant within the biological specimen.
2. The electronic device of claim 1 , wherein the processor executes the diagnostic client to locate first image data by applying one of a shape location algorithm and a template matching operation to the first image data.
3. The electronic device of claim 2 , wherein the processor executes the diagnostic client to locate second image data by applying one of the shape location algorithm and the template matching operation to the second image data.
4. The electronic device of claim 1 , wherein the processor executes the diagnostic client to average color information across the first image data, and wherein the processor is further configured to execute the diagnostic client to match the averaged color information for the first image data to corresponding color information from the second image data.
5. The electronic device of claim 1 , wherein the processor executes the diagnostic client to match color information from the first image data to corresponding color information from the second image data by performing Lab color space analysis on the color information from the first and second image data.
6. The electronic device of claim 1 , wherein the digital image information for each of the exposed test strip and the reference color chart is captured in a single digital image.
7. The electronic device of claim 1 , wherein the digital image information for each of the exposed test strip and the reference color chart is captured under the same ambient photographing conditions, but at different times.
8. The electronic device of claim 1 , wherein the plurality of color blocks comprising the reference color chart are arranged in a plurality of test-specific sequences.