Ultrasonic imaging device and image processing device

An ultrasonic imaging device, comprising:

• a processor coupled to a memory storing instructions that when executed configure the processor to:
• transmit an ultrasonic wave from one or more transducers to a subject by outputting a transmission signal to the one or more transducers, at the same time receive a reception signal output by the plurality of transducers that received an echo generated in the subject and perform a predetermined processing;
• generate a first ultrasonic image and a second ultrasonic image using the processed reception signal;
• generate and output an output image using the first ultrasonic image and the second ultrasonic image,
• generate the second ultrasonic image which is smoother than the first ultrasonic image,
• generate the output image by calculating filter coefficients using pixel values of corresponding pixels of the first ultrasonic image and the second ultrasonic image, and
• process one of the first ultrasonic image and the second ultrasonic image by the filter coefficients,
• wherein the processor is further configured to:
• use a coefficient a and a constant b as the filter coefficients,
• calculate the coefficient a and the constant b, with which a difference between a value obtained by multiplying a pixel value of a pixel of the first ultrasonic image by the coefficient a and adding the constant b and the pixel value of the corresponding pixel of the second ultrasound image is minimum, using the pixel values of a plurality of pixels in a window set for the first ultrasonic image and the second ultrasonic image, and
• calculate a pixel value of the output image by multiplying the pixel value of the pixel in the window of the first ultrasonic image by the calculated coefficient a and the constant b.