Controlling a remotely located Robot using Hand Gestures in real time: A DSP implementation

Telepresence is a necessity for present time as we can't reach everywhere and also it is useful in saving human life at dangerous places. A robot, which could be controlled from a distant location, can solve these problems. This could be via communication waves or networking methods. Also controlling should be in real time and smooth so that it can actuate on every minor signal in an effective way. This paper discusses a method to control a robot over the network from a distant location. The robot was controlled by hand gestures which were captured by the live camera. A DSP board TMS320DM642EVM was used to implement image pre-processing and fastening the whole system. PCA was used for gesture classification and robot actuation was done according to predefined procedures. Classification information was sent over the network in the experiment. This method is robust and could be used to control any kind of robot over distance

Edge detection based on type-1 fuzzy logic and guided smoothening

Edge detection is an important phenomenon in computer vision. Edge detection is helpful in contour detection and thus helpful in obtaining the important information. Edge detection process heavily depends on chosen technique. Soft computing techniques are considered as powerful edge detection methods due to their adaptability. This paper presents a fuzzy logic based edge detection method where the quality of edges is controlled using sharpening guided filter and noise due to the sharpening is controlled using Gaussian filter. The accuracy of the method is judged using a variety of statistical measures. It has been found that by proper selecting the smoothening parameters a significant improvement in the detected edges can be obtained

Pests, Diseases, Resistance and Crop Protection in Groundnuts

There is an extensive literature on pests and diseases of stored groundnuts and groundnut products but in this paper we concentrate on field pests and diseases. Many of these have been reported in recent years but few have been shown to be important on a world scale. Current research in many countries now emphasises the integration of chemical control with cultural practices and the use of resistant varieties. While the application of pesticides as high- and medium-volume sprays and as dusts has been economic for groundnut farmers in the USA and elsewhere, this has not been the case in much of the tropics where groundnuts are produced on small plots by traditional fanners. Although advances in controlled droplet application techniques could change this situation in the future, there is no doubt that the greatest benefit for the traditional groundnut farmer would be the availability of varieties resistant to the major fungal and viral diseases. Research towards this end should be encouraged and international cooperation increase

Intra-operative measurement of tumour size in breast cancer and its comparison with other methods: a prospective study

Accurate measurement of breast tumour size determines staging and prognosis. Discrepancies amongst clinical examination (CE), ultrasonography (USG), mammography, pathological examination (PE) and magnetic resonance imaging have been reported. However, few studies have evaluated changes in breast tumour size from the operating table to the laboratory

Should COVID-19 Patients \u3e 75 Years be Ventilated? An Outcome Study.

Background Elderly patients with COVID-19 disease are at increased risk for adverse outcomes. Current data regarding disease characteristics and outcomes in this population is limited. Aim To delineate the adverse factors associated with outcomes of COVID- 19 patients ≥75 years of age. Design Retrospective cohort study. Methods Patients were classified into mild/moderate, severe/very severe, and critical disease (intubated) based on oxygen requirements. The primary outcome was in-hospital mortality. Results 355 patients aged ≥75 years hospitalized with COVID-19 between March 19th and April 25th, 2020 were included. Mean age was 84.3 years. One-third of the patients developed critical disease. Mean length of stay was 7.10 days. Vasopressors were required in 27%, with the highest frequency in the critical disease group (74.1%). Overall mortality was 57.2%, with a significant difference between severity groups (mild/moderate disease : 17.4%, severe/very severe disease : 71.3%, critical disease: 94.9%, p \u3c 0.001). Increased age, dementia, and severe/very severe and critical disease groups were each significantly associated with increased odds for mortality while diarrhea was associated with decreased odds for mortality (OR : 0.12, 95% CI : 0.02-0.60, p \u3c 0.05)]. None of the cardiovascular comorbidities were significantly associated with mortality. Conclusion Age and dementia are associated with increased odds for mortality in patients ≥75 years of age hospitalized with COVID-19. Those who require intubation have the greatest odds for mortality. Diarrhea as a presenting symptom was associated with lower odds for mortality